10mm, 5mm bore, 20T smooth idlers. You don;t have to have 10mm belt but it should be nice.
5mm screws and a couple nuts.
I have it in, all is nice, the screw adjust is working and pretty nice to have.
The only issue is the endstop locations are a bit off. I pu tit together and plan on running it with sensorless homing (I hope). I will work on the endstop locations ASAP.
Thatâs an impressive trick, keeping the footprint the same with the larger idlers. I was only able to do that by going from 1" tube down to 1/2" pipe, and going with sliding bearings instead of rollers.
3/4"EMT and 1/2 EMT, I had to downsize or it just wouldnât fit.
Yup. I have curbside pickup sceduled for 10â of 1/2" EMT conduit and 10â of 3/4" EMT conduit. Itâs hard to be 100% sure that the Canadian product will be identical to the US counterpart, but conduit is pretty safe, I think. I donât think that Iâd try the HDPE sliding bearing on a galvanized surface, so the wheels are definitely a better idea here.
I presume that the 3/4" is for the Y rails, since the 1/2" is pretty tight to be running 10mm belt through.
Okay. I made one last tweak (I hope). I think I worked out a great solution for both mechanical endstops (roller and non-roller), kinda hackey but really not too bad.
The updated parts has less than an hour on the printer.
TMCâs for the win, those puppies are extremely quiet. In this video the second one is the TMC, and you can hear the baking soda crunchingâŚthe volume seems extremely drastic in real life, but the video does not portray it that way. 2 fancy drivers, worth a few extra dollars. Easily be able to have it run while sitting at it and not notice over a conversation in a quiet house.
If you listen to the endstop click the second one is extremely loud (louder) than the first. I tried to edit it the same, but I must have picked up background noise as well.
OhâŚand I am done with the CAD for the parts. I will try to whip up an assembly and start working on some instructions.
Wait, what? That is from on top of the sand? I kind of like that⌠Why am I hiding this beautiful mechanism?
Laying under it, on the cold hard floor for the 30th time over the last few days.
Tremendous work! My son and I are in for a beta build when you are ready. Iâve started a cart with some of the essentials. Let me know when we can click print 
How many idlers will be needed. I was gonna pick up some belt too, ballpark needed?
I am up for beta!!!
Because it looks like magic that way.
The coffee table that Iâm using has a lower shelf⌠Iâm considering putting some mirror there so you can see the mechanics once Iâm not longer lying on the floor under it.
Wait, you have a glass bed and that is from underneath? I am so confused.
I bought two pieces of identical glass, the marble is between them.
Iâll take a full picture after some coffee
More beta testing.
Dan is nearly there with his beta, lets see how it goes there first, and I will either do another round with you two or just start releasing things.
I plan on doing the assembly in CAD today and will generate a BOM asap.
The controlling factor for build size is the strength of the base material, correct? Thatâs why you used glass?
I used glass so I could get the magnet as close as possible knowing it should not sag enough to drag.
I have a giant build coming up with two large glass fence panels I got from Loweâs, so this version was built with that in mind. Full diner table size. I need to work out how I am going to place some side LEDs for that one though.
I used to run my table super slow. I was worried about the steel ball not sticking and the faster it was, the louder it was.
I have been running it at about 60mm/s+, and it is absolutely fine. The magnet is adjusted super close, so the ball sticks better than ever, and wheels are very quiet, and the silent TMCâs round it off. The one is more zen than the last Zen.