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
Couple sets I madeThey look cool. I like the fact you can make 4 at once. I had to do them one at a time. Wasn't too bad though as only took 1 hour till they were de-mouldable. Sounds like it'll take a bit longer with gasket stuff, so if it works well, I might make another mould.
Well if its warm like outside in the sun with good ventilation you can peel them loose in a hour, but I kinda assume its cold everywhere and people are doing this indoors lol. You can put them in the oven at 100 degrees and they cure really quick.
I live in England, so you can safely assume its always cold
Do you know if it'd be ok to stick in the oven being a silicone mould? And is that 100 degrees C or F?
100F is safe and is usually one of the lowest temp settings on a standard oven.
Cool. Well I'm hoping the stuff arrives tomorrow, so will report back if it does.
Dang! Got the instant gasket stuff today around lunch time so thought i'd give it a shot straight away. As my mould is made of silicone, i gave it a good spray of a mould release spray and filled it all up. Unfortunately, 7 hours later, it looks like the spray did nothing, as i now have a glued shut mould. Gutted
I've got a load of silicone left from the first attempt though, so will set about creating another one. I think i can make it a bit better this time too, so will use what i learnt from the first one.
I think i'll just stick with the rubber i was using before though, as i was getting better and better results, so will just do some more experimenting.
That sucks man. I used plaster of paris to make a mold. It doesn't stick to that too bad.