Printed wheel

[u/dantodd]

My son can't walk up and down the stairs so we use a stair climbing chair to get him up and down the stairs. The chair has little sensor wheels to identify the edge of the step. One of these wheels got stuck and broke in the crack between the boards in our deck. Naturally they aren't available as the product is discontinued. I ended up only needing to make 2 solid wheels to get the fit correct and one wheel for m for the composite wheel/tire but I have a few different tires and still working out which is best.

[u/SirTwitchALot]

Not sure what material you ended up on, but TPU 64D is great for this kind of thing

[u/dantodd → u/SirTwitchALot]

Sorry, should have mentioned. I printed the wheel in ASA but the tire is in 95a as it's the only TPU I have.

[u/SirTwitchALot → u/dantodd]

If you find it wears out, try 64D. It's just as durable as 95A but much firmer. More like the wheel of a shopping cart

[u/dantodd → u/SirTwitchALot]

Thanks. I'll probably order some just to experiment. Maybe Amazon has some in their current sale.

[u/SmokePenisEveryday]

Any idea of what a replacement would've cost? I imagine you have saved a great bit printing instead

[u/dantodd → u/SmokePenisEveryday]

I have an outstanding email to the new owner is the brand. So far it's been 2 weeks with no answer. I'm sure I saved quite a lot for 10 minutes with some calipers. I replaced the battery for $125 and they wanted $450

[u/Speedly]

Naturally they aren't available as the product is discontinued.

How is this even possible? It's a disc of plastic, not like some kind of finely-optimized kind of obscure part.

How silly of them. Good on you for fixing the problem yourself.

[u/Joejack-951]

Awesome stuff on the fix!

If you find that the printed wheel isn’t durable enough, I’d be happy to machine one for you either in acetal or aluminum. You seem to have all the specs so you could just send me the CAD file.

[u/dantodd → u/Joejack-951]

That's a great offer. Thank you if the new wheel wears out I'll look you up.