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
@mattbrailsford Thanks for the info, i've been looking around and I think this might do it here:
http://www.uscomposites.com/moldmaking.html 75-60 RTV Liquid Urethane Mold Rubber
It down the page a little bit, seems like it would work but I am not sure, what do you think?
@charleybot looks like it could work. Worth a try at $15. The good thing is, the mould is the most expensive part, so once you have that, you can experiment with casting materials, but from the specs, it sounds about right.
@mattbrailsford - thank you for the help with this, I think I am going to give this a try in the next few weeks, even though it looks like it will be a trial/error thing for me, it's easier than trying to find a replacement track/tracks for Wall-E
Thanks again
@charleybot no problem. The trial an error is the fun bit, especially when you nail it
Let me know how you get on.
The video looks promising. Let it run on tiles in the bathroom or outside on pavement to see if the treads get sanded off by that.
Whoop! Got this guy in the post
So now have tires in omni sizes too
You might be able to find somebody with the shoulder spring you need to fix it here in the forum.
You need a spring? I may have one.