Wheel Upgrade ? Artillery / Creality / Anycubic ...
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- เผยแพร่เมื่อ 8 มิ.ย. 2024
- Not all upgrades make sense. But which one does?
Thoughts on perfect Bed Wheels.
Close look at Artillery Sidewinder X , X2 , Genius.
00:00 Intro
00:30 What is wrong with the bed?
03:50 Adjusting the Bed-Rollers
05:20 Close Up a demaged roll
06:53 Why not upgrade to "Polycarbonate" ?
09:04 Tipp to tighten the belt
11:22 Why not upgrade to "Linear Rails" ?
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good video, I appreciate the parts where you explain the reasoning behind not using things.
having done the polycarbonate wheel upgrade... Its a pain to install and there wasn't a any noticeable difference... i would firstly make sure your wheels are properly tensioned. if you use it for a year or two. and need new wheels/bearing etc... then sure why not use them.
Very interesting, thank you.
I have changed to polycarbonate rollers. The Delrin (or POM) wear out and create black dust in the grooves. The plastic you broke with the pliers looked like acrylic. I was a machinist and worked with polycarbonate quite a bit. It doesn't shatter are break like it did. It is more forgiving. It bends not break.
IMO the POM dust isn't an issue. It's part of how POM works when there's friction. The wheels scrub because they are in a V groove. The resulting dust acts as a lubricant, and over time the wheels will scrub less and less. They are designed to wear in. Polycarbonate is entirely the wrong material to use in such a scenario imo. You want something that either wears in with dust that acts as a dry lube, or something with a low friction coefficient. To me POM is the ideal material, but maybe UHMW-PE? I think Polycarbonate is just marketing. UHMW-PE isn't as sexy as polycarbonate, not that many people know about it's amazing properties. I do think it's probably too soft though.
The BBs in the wheel can be used to replace the ones in the Nema 17s.
the linear guides must not have grease or oil, but dry lubricant. (ptfe, silicone) depending on the models, a linear guide can withstand more than 300kg of stress.. in the case of a 3d printer it will be necessary inserted a damping material if you want to limit the resonances. this kind of guide is used in cnc milling machines and poses no vibration problems
I agree that polycarbonate is an odd idea. Marketing I think. The properties of polycarbonate are all wrong for such an application.
My picks if I was starting from scratch and nobody had invented one of these machines before, would be POM first, then UHMW-PE, then nylon, then maybe hard urethane rubber like what skateboard wheels are made from.
V groove wheels scrub in the groove, it's a side effect of having them locate the bed in more than one axis, i.e up and down as well as side to side. POM abrades, which makes fine dust that acts as a lubricant. That's how POM works. Polycarbonate will make very fine dust that probably isn't at all lubricating. Polycarbonate is chosen for it's toughness and impact resistance, not it's friction coefficient. UHMW-PE wouldn't abrade, it's extremely slippery, but I think it's too soft and much deform, and it doesn't like temperature. I don't think urethane rubber is great without some kind of lubricant. Teflon?
I don't know, maybe reinventing the (v-groove) wheel is a waste of time.
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Interesting, not 100% sure about the statement on linear rail, the play on the carrier is basically not existent and much less of the one you can have on Pom wheels, lot of corexy use linear rail on all axis with good result
There are many options to upgrade and tune eg. I like to focus only on upgrades that have a visible effect on my prints. Changing to linear rails does not print any better than good adjusted wheels. If I would see any better prints anywhere, I would have already upgraded to linear rails, hemera extruder, 32bit board - but no, I didnt upgrade all that. Have you seen any better printquality somewhere?
@Just Printed_3D (EN) Yeah, basic bed slingers do beautiful prints when tuned well and run at a realistic speed.
I think these core XY printers are all about speed. In that scenario, with the extreme accelerations ect, you need something that won't have any play or flex in it.