Things you discover when running a time lapse… Your printer bounces around on the shelf like a jack in the box… I think I need to bolt it down to the shelf… Was going to use it as a bit of promotional material for my business but with the vibrations, not a good idea. I knew they moved, but not this much…
What sort of feet does it have?
How fast was it actually moving at the time the big moves occurred?
Feet may make the difference before bolting and fixed base may be detrimental to the print if there’s a larger mass changing direction (momentum) and the base can’t move. I’m thinking about deflection but I’d hope the machine is rigid enough to avoid noticeable change and stepper torque isn’t exceeded!
@Colin_Durrans_minisu - it’s just the frame directly on the shelf. Rubber feet is the other option, but any twist causes the auto level to go out, they’re acrylic framed Prusas (Migbots) which sit on wooden fibreboard packing shelves. All I was thinking of doing was creating screw-down plastic feet for it to tie it in position. It’s thin wall infill at 50mm/s that’s causing the movement.
@Ax_Smith-Laffin is that a twist you see in use when you have feet? How secure are the fasteners?
I’m not familiar with this printer but if you’re seeing twist in use with feet, I’d be concerned about seeing it again when bolted down - you loose the compliance the movement gives.
I hate to say wind back the speed but that might be a solution - less momentum when you change print direction would reduce the chance of twisting/pulling the frame…
@Colin_Durrans_minisu , its mainly when I wedge something under the frame to level it off, the shelves they are on are store room shelving with cheap fibre board as a shelving surface, so they’re not exactly level, add that to the Migbot Prusa i3 being a cheap ($300) printer and you end up with things not sitting correctly. All I’m actually thinking of are just a few printed feet which I can screw into the wood and drop the printer in to stop movement, think U shaped channel, the printer won’t be fixed to the shelf to pull on the frame, just dropped into the channels to kill the movement from the vibration. It’s a temporary measure as they’re going to be converted into my FB2020 CoreXY design soon anyways.
Definitely put rubber feet on it (it may eventually walk right off the shelf otherwise), but turning the jerk down should make it a lot less likely to move. Also, putting feet on it puts it out of tram, you should probably reinforce some stuff while you’re at it.
@Whosa_whatsis - thanks for the tip on the jerk, I’ll drop it a little, it’s only trying to shim it to try and make them level with the shelf, so putting feet on it should be fine.
I had a similar problem where the screws were all rattling loose, lowering jerk made a huge difference.
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