Asked — Edited

Reprap Prusa I3xl Printer Build

I am thinking about building this printer, but replacing the hot end with an E3D v6. I see I can print out the parts to connect the e3d to the extruder. I want to do this because I would love for this to be a project for my high school students next year and want to get some experience with it before throwing it to them to do. I know that there are better printers out there, like the makerbot or its many clones, but I wanted to know if any of you know if this is a decent design for the type of things we do around here. For example, would it be sufficient to print off the parts that would be involved in building an InMoov for example, or maybe the Jimmy type bot from intel. I have no experience with 3D printing and want to truly understand what is going on instead of dropping a box on my desk and saying Print This. Just the way I am I guess.

Is there anyone in this community that has experience with Prusa i3 printers that could tell me if the quality of the prints would be worth this project or not? I know that a lot of this has to do with setup and configuration, but once configured, were you happy with your printer? I don't want to go down a path that I ultimately would be disappointed in. Which opensource software should I be getting familiar with? Any other recommendations?

Thanks in advance. As you can see, I have just started scraping the surface of this and a lot of questions.



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Wow that's a pretty big build platform. It should print most of the inMoov parts. I think on thingiverse they are broken up pretty well to fit smaller printers so you should be good with that.

I've only owned a 3d printer for a few months but I've done tons of research. I don't know a whole lot about Prusa style printers, mostly because I had no intention on building one. It is one of the earlier 3d printer designs. They seem to be great when they're in proper order.

Which brings me to this, if you want to tinker and do a lot of adjusting and fine tuning then it's the way to go. If you want to come close to putting it on the desk and start printing, you want to go the maker bot route.

I spent a good month dialing in my Solidoodle just to get great prints. (I then moved it and that's it's own story and struggle of it's own. Not typical to be fair but, it's just where I'm at.) Now, I knew it would be some work and I'll be honest, I found the experience and knowledge gained incredibly rewarding but, if I could go back in time and have more money then I would go the MakerBot clone route, just because, now that I've done all that tinkering and have the knowledge I have, I really wish I could just sit down and say print.

I highly recommend watching a lot of you tube vids on 3d printing. Then try downloading some of the free 3d printer software programs and mess with them a little. (This may be beyond you this second but,) you can slice .stl files and mess with the slicer settings to see the different results you get without even having a printer. I did a bunch of this so when I finally did get a printer I was pretty much ready to go on the software side. AND THE SOFTWARE SIDE is a real big part of the 3d printing process.

And none of that really even covers 3d modeling and creating your own objects to print.

My thread on 3d printing may have some info you may find helpful as well.

Solidoodle 2, Ez Bits And My Other Adventures In 3d Printing.

Nothing about the Prusa printers but there should be some general info that may be useful.

And although it's geared toward Solidoodle owners, there are a few active Pursa owners over at

Lot's of info about 3d printing in general there as well.

I'm very excited to be a 3d printer owner and get excited when I hear of more people taking the plunge. There's a lot of info to absorb but once you get into doing it for a bit it all starts to seem fairly simple and intuitive.

In short, research the 3d printing process so you can get a feel for the steps involved then get some free software and get familiar with as much as you can on the software side. If you've got good hardware, you won't have to mess with it much and most of your time will be spent with software anyway.

There are a few guys I expect to chime in as well, like the XL Robot boys. They have a few MakerBots. And Jay from the UK might even have a Prusa style printer. I'm just excited to see someone wanting to take the plunge so I wanted to chime in.

I hope this was of some help.


It was. The main reason that I was looking at the prusa's was because of cost and I could build it over time and not take the entire cost hit at one time. I suppose I could do that with other kits too, but I was actually thinking about not actually using a kit and just getting all of the parts individually and making my own. It would be a fun project, but could also get very frustrating. I've been doing a lot of research, but there is so much more to do...

I understand the concept of slicing and what the system has to do to build a 3D object from a model, but it fascinates me that we have gotten to the point that this is possible. Another real concern I had was that the build area would be large enough. We will be building an InMoov with 5 EZ-B V4's over the next few years and I thought it would be cool to build the printer that is building the parts for the bot. I guess I need to go look at the parts and figure out how much build area we will need.

This printer will be used heavily because while the High School students are working on InMoov, the Jr High students will be building Jimmy, so we might need to get a couple of these over the next couple of years. Because they will have so much activity, being able to fix them is a concern also. I wont be able to go to the school and tell them to give me more money to maintain the printers and nobody else at the school is going to have a clue of what to do with them. I maintain the schools servers and network also. After watching the makerbots run at EZ-Robot non stop, I am sure that they are a very solid build of a 3d printer, but that would take away the ability of the students to be a part of building what helped them build their robot.

Lots to think about. Unfortunately, I have to make a choice in the next month or so.

Thanks for your thoughts. They were very helpful.


Most people seem to be able to build most kits in about a day. I went pre-assembled because I wanted to start printing asap. Now that I've owned my Solidoodle awhile and understand how it works I'd like to build a larger printer and I'll probably go the kit route next year. When I was last looking it didn't seem much cheaper to go piece by piece than it was to get a kit. So it may be worth it just to be sure you'll have EVERYTHING you need, and not get half way through and figure out you need to order another part and wait for it.

That kit looks good and seems like a good fit for what you want to do. It has a great build space. Most home/personal 3d printers don't even go up to 12". I'm sure there are some but 5"-9" seems to be the norm. Especially in the pre-assembled market. I've not looked at the InMoov files on thingivese in a while but I'm pretty sure they were split up to fit on a 8" or 9" bed. Mine is 6" and the few I tried were just a little big for my printer.


What I am finding in messing with the files is that some of them are really tall (Z) more then long (X or Y). Its an interesting project. I cant wait for the Jimmy project to be posted.

I think that I would have had a heart attack if I were in Jr High and could build a Jimmy type robot. I would never have left school if I could have built a InMoov robot. That is why I agreed to take over these programs. Building a 3d printer is cool enough, but knowing that you then will use it for cool projects like this makes it even cooler. I think the class will be a lot of fun and you will see some new faces show up asking some questions. My goal is to get the students to learn how to research and document their progress. This Community will be a really cool way to do that and hopefully motivate others to have some fun with the EZ-B.


I'm glad there are folks like you steering kids in this direction. Best of luck. Keep us posted on how things go. :)

South Africa

If you want to build a 3d printer without a kit here is a link to how to build one but you can change it to suit you. this 3d printer was built with arduino But maybe you can build on switch the ezb

The Ben heck show There are other videos of how he upgrade this 3 d printer that he built here is one

The Ben heck show


I have been pricing out all of the components. It comes to around $550 to build a reprap if you get all of your own parts. I can pick up a solidoodle or a asterid for about $500 and add my own upgrades as time goes on. One thing that I am finding out is important is that you want to have the 3D printer enclosed but there is a patent on that so, you would have to enclose it yourself if you don't want to spend an arm and a leg on one. I also figured out that an 8x8x8 build volume is pretty large after messing with a lot of the InMoov stl files.

Right now I am looking at this one.

I guess the first thing I would do is change out the power supply so that the other things would be possible. I can add plexi to the outside of it using a seal and some magnets. I can also add the screen and sd card reader later. My computer won't get bogged down when printing and I have a dedicated machine that stays on 24/7 and can do the printing. It is on an APC so hopefully that will keep it up and going if there are any issues. Another machine will be creating the G-Code, and placing it on my network for this machine to use. Also, I like the larger screen option instead of the one they offer on their site. I would add a bed heater and would eventually change out the extruder. They are using all reprap components so it will be easy to fix if anything happens. It comes built and ready to run, so I will be able to learn more about 3D printing itself, instead of the hardware. I am sure that all of the additions would kick it over $700 but it would be one heck of a reprap in an enclosed box with a filament holder. Who knows, I might even end up adding multiple extruders. I have seen a 4 extruder block so that could be possible in the future. All in all, it gives me a base to build off of for about $550 shipped.

I think the students will be building a reprap from scratch. We will price the parts and build the frame, and then get the electronics purchased and put in. This will be a really good learning process. I have just become inpatient for a personal one I guess :)


That Astrid looks like a solid unit. I hope you keep up a thread on this when you guys start building. :)


Well, after days of researching and thinking, I pulled the trigger today and purchased a MakerFarm I3v kit to build. I completely did a flip-flop after analyzing how much it would cost to add all of the parts that I would be adding to the Astrid unit and remembering something that I always told my employees. When I got into management about 25 years ago, I promised myself that I would never ask an employee to do anything that I wasn't willing to do. I have kept true to that. While the students aren't going to be employees, I still feel the same way about them, so I didn't feel good about having them build a 3d printer if I wasn't willing to do the same.

I researched many kits and found that the people who have built the MakerFarm kit were more happy with the kit and the finished product than pretty much any other kit out there. i had considered sourcing all of the parts myself, but the cost was just about as high with the kit, but with many more trips to the hardware store because of forgotten pieces and such. Also, there are extensive build instructions with the MakerFarm and more choices for hot ends. The kit comes with everything that I was going to do to the Astrid, just in kit form. After watching all of the build tutorials and videos on youtube, I am very confident in how easy this kit will be to put together. In addition, there are some mods to this unit like auto leveling that I will be adding. From what the forums are saying, this is the I3 kit to buy.

I also had a bid going for a duplicator II on ebay. It got up to a higher cost than purchasing from the company so I backed out. 3d printers are almost as wanted as the ez-b 4 by the fine folks on the internet :)

I will be documenting the build and posting it. Its always nice to have another person in this community with experience on building a reprap or repstrap as it might be. More to come!

Makerfarm i3v kit


Yes indeed. 3d printing is only growing. I'm almost sad I got my printer when I did because it's only been a few months and there are so many more and available, decent, $600ish printers out now. I could have gotten something a little bigger. On the bright side, I have owned a 3d printer for a few months.:) I look forward to the follow ups.


So I ended up canceling the order with MakerFarm. The reason for this is that I saw a review on youtube where the guy started experiencing some issues with the wood frame expanding and contracting with weather changes. I get that living in an area that can be very arid one week and extremely humid the next. I ended up parting the project myself. I relied on Ebay and MakerFarm for components and ended up building a Prusa i3 Rework which is a single aluminum frame Prusa i3. I got the frame and other hardware and stepper motors over the past week and put it them together last night. Electronics will be ordered after the first of the month.

As far as the build, the only issue that I had was one tap in the plate wasn't completed. It looks like it was started but not completed. This is on one of the 3 holes holding the right Z axis lower bracket. The tap was completed about 80% of the way so I shortened the screw and put it in place. it is still very well mounted. This is nothing compared to the stories that I have read about some of the kits that are out. Also, the 3D printed parts that I got were perfect. I didn't have to do any cleanup except for the hobbed extruder bolt hole which is printed closed to prevent any warping from taking place to the material around where the hole would be. It was easy to clean out.

I had concerns about ordering parts off of Ebay for this build but I did a lot of research before I ordered. I may have just gotten very lucky so, here are the items that were purchased from ebay. All of these are in the USA, which for me was a factor in getting them by the weekend.

Prusa I3 Rework frame and hardware

Prusa I3 Rework Printed parts

Belt and pullies

I also purchased my stepper motors from ebay but will wait until I know that they are working before I comment or recommend. I will purchase my electronics from Makerfarm. I spent some time talking to the main guy at MakerFarm and he was very honest and helpful. The other parts that I have ordered from him were shipped out in a matter of hours from the time I placed my order. Very impressed with these fine folks.

Well, now I wait until the first, which could be a problem because the EZ-Robot parts that I have been waiting for should be arriving at about the same time that my electronics for my printer are arriving. I really hope that I have to decide which to unbox first. That would a great start to the hottest time of the year around here. May keep me from getting any sunburns :)


Climate had a huge impact on my thermistor. I'm in NW Ohio and wanted to set up my printer in the basement. It was still so cold that it wouldn't stay hot long enough to melt the filament. This was right out of the box with no enclosure, just a frame. I went about 2 hours trying to figure out what could be wrong and moved it to my bedroom in an act of desperation and it started working just fine then.

I always thought that wood was an odd choice just because of swelling and shrinking due to temperature changes. It's good to hear some info that confirms my suspicions.

I look forward to see how it goes. Are you going to build it or the students? Or were you going to build one and get a second one for them to build?

I'm sorry your summer is starting out with having to make those tough decisions.;) I personally have to use SPF 100000000000000000000000000000000 to keep from getting sunburns so unless I'm going to be swimming somewhere, I try not to bask in the glory of the Fat Old Sun.

Keep the update coming. I'm enjoying watching your progress and process.


I am building one for myself. The students will be building one also. Its nice for me to have gone through a build first. I'll have a better idea of issues they run into and can print the parts for theirs.


:) Not a bad plan at all. I was going to suggest printing what you could once you go the first one done.


So, here is the latest update. I got the controller and display and got them setup over the past couple of days.

I went with the Azteeg X3 PRO 3D printer Controller

Azteeg X3 Pro

And the ViKi LCD - Control Panel Interface

ViKi Control panel

along with the Helios 200 Heat Bed kit 200 x 200 mm

Helios 200 Heat Bed

I love the Azteeg X3 Pro for a couple of reasons. The first is that it is extremely expandable. I could add 4 more extruders to this guy, making it a 5 head printer. I could add another hot bed giving me 2 of them. I could add 6 more fans, 6 more thermistors and a couple of thermocupliers.
I can build out as much as I want to on this board and not have to replace anything. If something fails on the board, I can just use another location on the board.
The second thing that I liked more is that there are 4 different power points for the board. I am running the hotbed off of its own power supply. I am running the board off of the usb power. I am running all of the stepper motors off of their own power supply and then the hot ends are on their own power supply. That is great for me. I would hate to have the board shutdown when something happens with the hotbed. There are other things about this board that I really liked, but it is worth checking it out if you are looking at doing something like this.

The ViKi controller was bought simply because it looks great and functions great. It is a bit expensive, but I also wanted something that would mate with the Azteeg X3 and it did that well.

The Helios 200 is really cool. It comes with a fiberglass tape for insulation, 2 solder pads on the bottom right by where the thermistor is installed for the thermistor to be mounted to. There are leads in the board that then go to the edge of the board. The board is robust and got to 125 C without any issue. It also mounts flat because of the insulation tape and the thermistor not having to run the length of the board. Check it out. I like it.

I got everything running smooth except for the extruder. I can extrude a short piece of 3 mm fillament to the length that is requested. For example, I can tell it to extrude 100 mm and it does 100 mm. When I tell it to print, nothing comes out yet. I dont know why yet, but I think it has to do with a modification that I made to my extruder. I am printing out a new one as I type this on a different 3D printer..

The stepper motors that I bought were used from ebay. They ended out to work great.

I paid $50 for them. I could have gotten them cheaper and gotten new ones. In the future, I will be buying them from MakerFarm. The only real snag that I have come into so far is that the thermistor didn't come with the Helios. There happens to be a 3D printer company in the city I live in, so I thought I would go over there and pickup a thermistor, which they offered online. They were not used to customers showing up at their door, and wouldn't let me buy it there. I had to buy it online and then pick it up. I broke out my cell phone and bought it, and then they handed it to me. Really strange, but I got it and could complete the build.

So, right now, there is only one issue that I know of that is preventing me from printing and it is being printed right now. I will hopefully be printing by tonight on my own 3D printer. I will update this again after I am printing.


One more thing... I replaced the prusa MKII that I had purchased, with a E3D V5 that I got locally for $50.00. Good price and even better, I could take a 15 minute car ride to get a very popular hot end. The prusa worked for the initial tests but something went wrong with it and I got sick of messing with it.

The issue with this is that the extruder that comes with the Prusa i3 Rework, doesn't work well with the E3D. I am now at the makerspace that I am a member of, printing the exact same part that I printed yesterday, but for the E3D. The good thing is that this auto bed leveling piece that I printed yesterday will work better with the new setup than it did with the really short Prusa MKII. Also, my current fan can be used for cooling the newly laid material instead of cooling the hotend. the E3D comes with a fan that is mounted directly to the heatsync.

Anyway, maybe today I will be printing something :)


Do you have a Thingiverse account? That's a lot of cool info, thanks for sharing it. I didn't get a chance to look at the links so I want to ask, what motherboard did your printer come with? I'm only familiar with the Sang-somthing and the Printrboard. I'm just wondering what you got. It seems that the Printrboard is being used by alot of printers now.


Since I self sourced everything, the printer didnt come with anything :)

I purchased the Azteeg X3 Pro. It is like a ramps but far more options for expansion. Good stuff and worth looking at if you ever look to replace the controller. I also got the hot bed and the control controller from the same guy. I am very pleased with all of these items. My stepper motors are giving me some fits and I think they will be replaced soon. What can you say, they were made in the 80's in China. They work okay but they are just sloppy.


I do have to say that I have heard a lot of really good things about the beagle bone black cape too though. It looks really interesting.


So, here is the update. I took off the first two weeks of July to build the 3D printer and get it running reliably. This is my first 3D printer and for about the past couple of weeks, it was about to be my last until this morning...

First, let me say that this was not from a Kit and everything was sourced from different vendors. I did this to learn, and like the last 1965 Ford Mustang that I rebuilt from the ground up, this will be the last time that I self source all of the parts. There wasn't an issue really with any particular part. The combination of all of the parts, being completely untested, and the marlin firmware which was not tested with the combination of all of these parts, made for an eventful build. There are hundreds of different things to tweek to get everything printing perfect. This is where buying a prebuilt box, or buying a kit is going to get you way ahead of the game.

I have to be honest. Yesterday was my birthday and I had to work late. On top of that, someone else was a jerk and left upset during a deployment because they had to wait 10 minutes for an answer while we were researching the issue he was having. On top of that, everything that I tried to print yesterday (and over the past 24 days) had some issue. A couple of times, the computer that I am testing everything from had a memory issue. This computer has 32 GB of ram and is a new computer. I will be printing from the microSD so it wasn't too concerning. I have had the printer taken apart about 10 times to tweek one small thing or another over the past 24 days. Along with that, I have made many tweeks to the marlin firmware to fix issue after issue. This finally got to me last night and I was about to put the 90% working 3D printer up for sale for what I had spent in parts.

I am learning a lot about 3D printing and last night, I printed what I would consider my first very successful print. I started it at about midnight and went to bed. I woke up this morning to the Raprio face on my printer in ABS at .3mm layer height resolution. I had the printer heat set too high, so it I can see where it spit a bit, but there were not any jumps in any axis, it stuck to the hotbed through the entire print, it looks good for .3mm layer height, there was no layer smashing going on, there was no separation of any of the layers, and the face is really very usable. I needed this to work for a presentation that I am giving on the 16th of August about robots and 3D printing.

I did this to learn a lot about 3D printing and I did. I also did this to evaluate if it is better for a class of high school robotics students to build a 3D printer or buy one. Well, I have come to the conclusion that with the cost of the Solidoodle 4 and the cost of the parts to build a printer, we will probably do both. Mine may reside at the school next year for use in the robotics program also.

Would I recommend this to someone else? Well, that all depends. Let me restate that I will never build one again that is not a part of a kit. Kits have their own issues, but the combination of parts has been tested with the firmware settings that are being used. I didn't save any time or money self sourcing all of the parts. I could have if I had gone even further, but I didn't want to go all the way down to that level, but even then it would have been $200 saved AT THE MOST. IMHO, $200 wasn't worth the trouble of building all of the circuit boards from components, or cutting down longer lengths of solid steel and threaded rod. For that matter, I guess I could have made my own threaded rod... anyway, not worth the trouble. If you are the kind of person who loves a challenge, and loves working on something every night for a month straight to get to perfection, and don't calculate what your time is worth in other areas, well, this is a project for you. For me, it helped pass the time while waiting for the EZ-B to arrive.

I have always said that I think that every male should have been required to build their first car. This would have taught them what it takes to build and maintain a vehicle. I kind of take the same approach on the 3D printer I guess. It would be great for you to build your first one because you will truly understand what is going on with these by the time you are done. If you are not the kind of person who cares, and just want to drop a box on your desk and say print, stay away from 3D printing for a while. It isn't going to be to that point for quite a while IMHO.

I have experience with 4 3D printers. My Prusa I3 Rework (build self sourced), Makerbot Replicator 2, Makerbot Replicator 2X and a MakersToolWorks fusematic kit. This is the Self source route, Kit route and appliance route. All of these have their own issues. All have their own valuable contributions to 3D printing. I base my opinions off of these 4 printers and the research that I have done on many other 3D printers.


Lots of great info D:) Thanks for sharing your experience. BTW it appears that all of the new Solidoodles coming out will have auto bed leveling. I big feature of Marlin and the PrntrBoards. Ill be picking up the $500 model as soon as I save up or tax refunds start coming around again. Thanks again for the detailed and informative post.


One more update here. I have made the printer into a dual head printer. It is taking me a while to complete this setup because my class starts on Monday had to focus more on my robot build and materials for the class than the printer. With school starting back a couple of weeks ago, I also have resumed my part time job as the network admin/server admin/storage admin/whatever else technical guy for the school my daughter attends.

I will post photos when I have it together and will post instructions and where to get the models for the extruders. I really think that I will like being able to print two colors for objects. I am not good at painting and this will reduce the amount of it I will be doing.

The only other thing that I can think of for advice is USE GOOD PLA OR ABS. Don't skimp here or you will want to pull your hair out


@D.C., I got my FlashForge Create to build robot parts. I spent 80 Hours trying to build the InMoov robot stuff. When I finally had enough to begin assembling some of it, I found that NOTHING fit together. Make sure that you calibrate it perfectly. I was so discouraged that I stopped trying to do it. My printer is just not accurate enough.


It's calibrated right. It took me about a month to get it right and every time I thought it was right over that month, I would start printing and discover it wasn't quite right. I printed probably 50 different calibration objects to check everything. The biggest issue that I had was figuring out what belt tension was correct. Every website says that it's important to get it right but It took me weeks to find out how tight was correct. It turns out that it is pretty dang tight, like strings on a base guitar.

It has been printing great for the last month or so, until I decided to make it a dual head printer. I just have been crazy busy with other projects to complete this one. Who knows, maybe this weekend it will happen.

This thread was mostly for anyone who was thinking about doing this for robot parts. It is defiantly possible and is something that I would have my students do in a high school robotics class. It's not something I would do again for home. I'm glad I did this, and it is working great. It was very frustrating at times and I wanted to paint a realistic picture of what building a 3D printer was like.


Congrat. d. cochan, I've built mine Prusa i3 at the begining of this year :-)

The first printing with a little help of my son;)

And now it looks a little bit different;) and has autocalibration on table (Z axis )


Great delta construction and big challenge with calibration ;)


Will you make any parts by yourself or it is construction out-of-the-box?


I know someone in my makergroup who built one of these and really likes it. They did say that they went with the beagle bone black cape on it and had really good results.