are you guys using a paid or free version of fusion 360?

Free!! Just renewed my free plan...best software ever!! Except for ARC of course!!

While building my little inmoov I have been working with gearboxes a lot. This isn't really appropriate for a walker actuator but I wanted to share a technique I am working with. Now that I have a SLA resin printer I have been printing the gears with that. The resolution is crazy so you do not get any of the layer lines that come with my regular printer and they mesh silky smooth. These early tries just used simple cosmetic resin and have lasted quite a while through testing although they are starting to show some wear (whiter areas). I have since ordered some high strength engineering resin to reprint these. We'll see how it goes.  The rest of the gearbox is PLA, Bearings added to fix some of the original design wear zones. The worm support is really bad out of the box.

Nice worm gear. I am curious to hear about the high strength engineering  resin works out.  I used to use ABS and acetone to smooth out prints but you lose a lot of detail and it is not very strong. The PETG seems to have a fairly good finish although I am not sure I am up for dichloromethane smoothing.

Nice...good to know that resin works for stuff like that!!

@perry, all my resins are brittle out of curing box. Are you using something like TUFF mixed in with the regular resin to toughen the cured print? How do you tap it for the screw that holds onto the servo? I couldn't imaging using it for functional parts.

@fxrtst (man I'm still trying to figure out how to pronounce that and what it means)

We all know resin printing from the awesome miniatures with incredible high detail. They were $2000 one Christmas and $220 the next. They were almost all made for the miniatures markets. Some time has passed and there is a growing movement to develop higher strength resins and processes. You are completely right about the brittleness in parts printed with regular resin. Mine are too, compounded by the fact I am usually printing thin parts at the time. But these thick heave parts printed non-hollow have held up well. I am noticing they do not have the same lubricity from the material I get with PLA gears so we will see how this new resin will perform. It is a ceramic no-fire resin with high surface hardness which I believe will help with galling and a much higher modulus of elasticity which will yield a better stress/strain profile. As I said, all words until I run it rough for a while.

Resins are coming along. Here's an example

Follow up post....I just got it.... FX Artist

I'm so slow some time