3D Printing A Wheel

[T^2]

Originally Posted by IVAN

o.o why not polyurethane casting and using hollowed version out of wheel to use as a negative because printing four or six of those wheels (at least) is going to be expensive

my math has it at 5 cents per gram if your using makerbot pla and 1.5 cents using an amazon competitor

That comes out to be about $40-$50 dollars for two robots' worth of wheels. Not that bad, I think.

[Bald & Bearded]

Interesting. I am curious to know how long it takes to print this wheel. Did you use one of the OpenSCAD parametric wheel programs available or is this your design? Any chance of sharing the STL?

[T^2]

Originally Posted by Bald & Bearded

Interesting. I am curious to know how long it takes to print this wheel. Did you use one of the OpenSCAD parametric wheel programs available or is this your design? Any chance of sharing the STL?

Here are some renders.

[DampRobot]

Originally Posted by T^2

Here are some renders.

Very good job with those ribs! Looks like a very efficient and strong use of material.

[themccannman]

I know what I'm doing all night.

[Nirvash]

Looking at it right now, looks like something messed up during the print

[Jon Stratis]

There was a team at North Star last year that used 3D printed wheels... I think it was 2175. They had a sponsor print them with material stronger than what you typically get for home printers, if I remember right. You should get in touch with them and see how their experience went over the season!

[DarrinMunter]

Originally Posted by dtengineering

I saw the head move for about five seconds and then an ad popped up... turned it off at that point.

Jason

I got about half a second before the add popped up. I to turn it off.
Was something wrong with YouTube that made you put the video on this site?

[Nirvash]

Originally Posted by Munter2081

I got about half a second before the add popped up. I to turn it off.
Was something wrong with YouTube that made you put the video on this site?

It's a livestream of it printing, I would assume the team doesn't have a fancy youtube streaming account. Nearly every streaming service has a start of video ad and the ad is only a few seconds long.

[Samwaldo]

We recently printed a pulley for our (Very Altered) KOP drive train to replace a lost one. We printed it with PLA at only 55% fill. I was worried that we did not do 100% infill, but its working fine with all the abuse the freshmen and I have put on it.

When we started experimenting with our printer i was surprised at how strong pieces can be if build correctly. I guess if a wheel breaks its as easy as printing a new one overnight. If you were to go to competition with printed wheels, make sure you bring extra.

[sanddrag]

Printer is now making a squeaking noise too. I'd go check on it if I were you.

[T^2]

Well, that blows. Looks like I'll be contacting MakerBot support.

[steinra]

230 C is on the hot side for PLA. I am typically printing around 195 C. If it get's too hot it can burn and cause jams in the head as well. 230C is in the ABS material range.

If you need a hot layer to stick, set your slicer to put the first two layers down hot, then have it dial the temp back to what will still flow well at a lower temp. Or under your printer control you can pull the temp back as it is running unless the g-code has a temp setting at every layer.

For a stronger material nylon can be extruded as well, but requires a pretty hot temp to do so. Not all printers are up to that level of heat.

Randy

[themccannman]

Originally Posted by Munter2081

I got about half a second before the add popped up. I to turn it off.
Was something wrong with YouTube that made you put the video on this site?

It's not a video, it's a livestream. Twitch is the best place to do livestreaming for free and nearly all free livestreaming sites put a short ad at the beginning of the stream the first time you open it. They need to pay for the site somehow, not everything is charity.

[T^2]

Originally Posted by Nirvash

Looking at it right now, looks like something messed up during the print

I don't know what caused this, but I do know what problems this caused. The piece of the wheel that got knocked off also dislocated the tube that routes air from a fan to the nozzle. Without this air flow, the nozzle overheated. This afternoon, I found the ceramic insulation surrounding the nozzle burnt off, and the kapton tape that held on the insulation melted to the nozzle. I'll be having some fun over break...