https://grabcad.com/library/cycle-test-prototype-for-automated-filament-loading-system-1
Started working on a mechanical prototype of ams system similar to bambus. Hoping to set one up to just cycle back and forth thousands of times to find issues. Take a look and let me know what you guys think.
@fcwilt Seems to stick. My brother is gonna cut it for me on the laser at work. Should know in a few days.
Does anyone know what type of steel is normally used for spring steel sheets? 400 series stainless?
I bought a mellow cdy v3 a while back to play with and never got around to putting it on a machine. I had an idea for a Bambu style ams a while back and I was thinking about printing some of the mechanicals and doing some testing. On the cdy can I connect a servo to say a fan output and use m950 s0 "fan1", as long as I have a separate 5v supply for the servo and tie negatives?
Those rollers that were on funssor store on AliExpress a month or so ago finally showed up. They don't look anywhere near as bad as far as machining quality goes compared to the pictures. Id be hard to pressed to make better ones on the lathe. I'll send some pictures later today, gotta get to bed so I can watch some college football today.
@tombrazier that's genius. Too fast for the bearings?
shoulder bolts finally showed up. guess its time to grind some bearings and make a roller on the lathe.
@o_lampe I remember talking to you about that screw extruder. Are these the right size screws for that design? You had 3d printed the rollers correct to see what the looked like?
I ordered a set. I'll take pics and let you know what they measure. If you get someone to commercially make sharpened flange bearings for the vde that would be awesome.
@tombrazier showed up 9-17-23 according to the funssor new items page. Does anyone know if this design works? I'll order a set and print the parts from that link and give them a shot. That's a pretty little design, I like how he solved the hollow stepper issue.
https://a.aliexpress.com/_mK0e0jY
Anyone seen this yet
@jay_s_uk That's what I was thinking too. Regular duet tool board is prob the same.
I was wondering about putting a few of these in a heated chamber. Any info on maximum chamber temp before it starts having issues? i dont see any max temp specs on github or on aliexpress page. Im wanting to run between 80C-100C.
@o_lampe I didn't consider the filament path being a spot where it might flex, that's a good point. The non canted bearings in the door, I considered trying to find a way of adding a 20 degree angle, but then I got to thinking that would decrease the length that the filament is backed and pushed firmly into the groved roller. That length is already limited by the angle of the grooved roller. The shaft for the roller I was intending to be 3mm carbon rod. The bolt and spring for the door is offset because the outer frame is actually 2 pieces so the roller assembly can be inserted. I have a couple different designs I'm playing with in cad and have ordered some sls parts to mess with. Waiting currently on shoulder bolts from China, apparently the boat must be stuck in a canal somewhere. As far as balancing I could prob get it close by calculating up the individual pieces with their specifical gravity and get close. I don't know if I'll try and make this, I might, just figured I'd throw it out for people to think about.
Been playing around this week in cad. 8mm roller would have to be made on a lathe. 683 bearings. Would make a 2mm lead 2 start thread on the filament. https://www.printables.com/model/573540-extruder-8mm-quick-release
@oliof yep that could be. Didn't think of that.
@mrehorstdmd That's interesting. I wonder where the 1.75mm came from? I'm assuming 3mm was plastic welding wire originally.
