Ok, Back in January i had mentioned this idea in jeffeb3’s build thread. I guess I may have got him thinking as I see that back in May he was thinking about cutting wheels from MDF.
But I’ve still been thinking about printing wheels. The problem is I figured they’d have to be printed in TPU and that meant not being able to use supports but to fit bearing pockets you’d pretty much need supports. So I stopped thinking about it and moved on.
Well…Someone on the FliteTest forums is building a low rider to use with a needle cutter…so I modified my needle cutter design to fit the 611 plate:
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And…well, the red piece on the bottom is a wooden insulator (because the needle guide gets warm in use and can soften PLA if attached directly to it.) I have a 611 router…and was curious how cuttable the design actually is…and I haven’t used my MPCNC for milling in awhile…so…
Cool, that worked out pretty well! I guess that’s the first part of my low rider now.
Shhh, don’t tell my wife!
Seriously…I’ve been debating converting my MPCNC to the 525 parts or a low rider…and I’m still undecided which way I want to go. I’ll probably go 525 but I’m really not in a rush to tie up my printer doing the big 12 hour prints. And for a machine big enough to do 20"x30" sheets of foam board the low rider makes a lot of sense…plus it would let me use more of my table as a table.
So maybe what I’ll end up doing is building a low rider AND upgrading my current machine…but shrinking the current machine back down to 2’x2’ and using it more for milling and 3D printing…hmmm. Well, like I said don’t tell my wife I’m thinking this way
Long story even longer…I figure a nice way to put off the decision a bit longer is to play with the printable wheel idea a bit more. And yesterday morning in the shower I had an idea on how to pull off printable wheels:
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It may be hard to tell from the photos. Onshape project here if anyone wants to look closer or play around:
But basically it’s a 3 part wheel. 2 PLA (or PETG) bearing holders and an outer TPU tire. All of which can print without support.
I also did a version with pins in the hubs to keep them together but I don’t think it’s necessary and that version would need printing with support:
[attachment file=“Screen Shot 2017-07-28 at 10.37.03 PM.png”]
The big issue I can already see is making the tires soft enough they can flex over the hubs…but stiff enough they can support the machine. Though I have a few ideas on that too if it’s an issue…my experience with TPU so far has me thinking it may be possible.
I’m going to try printing one tomorrow just for fun and see how it does.
What do you guys think? Am I totally wasting my time (wouldn’t be the first time) or is this possibly viable?