mattbrailsford
Hey Guys,
I'm just starting off a new project after I got an Omnibot 2k off ebay. I'll be creating a project page for it soon, but I thought I'd share a little bit of it now.
When I dismantled the bot, and gave it a clean, I noticed that the wheels were pretty degraded. I know josh can create new ones, but being new to this, I really wanted to learn something new, so decided to make my own mould.
What I did then, was to carefully remove one of the existing tyres and then used a sealer to seal all the cracks.
I then setup a box for it, and also attached a kind of funnel to help pore in the ruber (turns out it wasn't that great, but you've gotta try these things
)
I then cast the hole thing in silicone
Finally, I then cast the tire and tada
I think it worked pretty well. The only bad bit is that I don't think I mixed the rubber to cast the tire very well as it's a little sticky. But hey, not bad for my first attempt
Great! I just wondered about that.
Ok, so here is the full set of A60s. I will test these for traction over the next few days.
Took a little longer to cast as I made a stupid mistake mixing 2 parts of part B, rather than one party of A + B. Meant I had to wash my mould out and start again. Doh!
On the plus side, I'm almost certain the stickiness from the first trials was down to contaminants in the mould, as the last tire I made from this batch was also a little sticky, which I think is because I had some remnants of the mess up left in the mould. I've cleaned it thoroughly now though with a q-tip, so should be good to go for the next batch
Wow I love the green color!
Here is a quick vid of the tires in action Click To Watch Video They seem to work really well, no slippage on the hubs or anything, so I'd be tempted to call it a success
@mattbrailsford - Nice job on the tires! I'm wondering how difficult it would be to make tracks for the Wall-E U-Command robot, I have one that's almost complete, but one track is missing. What do you think?
@charleybot I can't see why not, it's just creating the mould, so as long as you have one good one it should be possible.
@mattbrailsford I'm trying to locate supplies to do this, and being in the U.S. I'm not having much luck... Anyone know where I can get this stuff in the US?
Thanks
@charleybot you should be able to use any silicone mould making silicone for the mould. For the tire, you want to find a 60 shore liquid polyurethane rubber (this is the tricky one). If I had a u-command wall-e I'd give it a go, but I don't have one I'm afraid (i have some of the interactive toy ones, but I don't think they are the same. I also think there is some variation between the ones in the us and the ones in the uk)