I'm using A4988s with my RAMPS 1.4 bit turned the VREF down to 0.25V and it definitely makes a difference to noise - thanks! Haven't tried extruder or z axis under load but no skipping on x or y axes under manual commands/speeds. What's your concern over Bowdens? I think a belt version of my 2^1> could be a good way to go.by smerrett79 - Smart_Rap
Bump so you can read my edit a few posts above.by smerrett79 - Smart_Rap
@madmike8 I thought the noise was mainly coming from the side panels but @djinn5150 mentioned in my build log that the rubber feet do help. My printer is on the carpet at the moment, so perhaps that's having a similar effect. Any chance of a link to dollar store foam? I'm in UK but might be able to source if I know what you mean. @djinn5150 "not in line with thinking" is exactly what I was afteby smerrett79 - Smart_Rap
I will give the rubber feet a go - I had assumed that the 3x side walls were the most significant souce of noise but it's good to hear you've noticed an improvement. Thanks too for the stepper voltage tip - 0.25V seems low to me but I'll gladly try it. As for the hot end - well spotted! It was clamped upside down as it had just been through nozzle/block tightening whilst at 245*C. V-slot... Youby smerrett79 - Smart_Rap
I can see that you could get really deep into this topic - printing bearings and connectors so you had fewer vitamins per printer... Better focus on the printer I'm already building!by smerrett79 - Smart_Rap
Technical discussion By the way, I don't profess to have technical proficiency, but I would like to start a discussion about: a) whether noise and vibration is an issue worth treating in smartcore design and build. b) if it is, what design and build approaches might help. A starting hypothesis for noise is that noise is a nuisance to printer users and others (e.g family) which impacts ourby smerrett79 - Smart_Rap
Just a quick post to show progress. Please don't ignore my plea for help in the previous post! This is my first smartcore, first build of a printer from scratch and my second ever. My parts are printed in PLA on my first printer, a QUBD Two Up. All rods are 8mm dia x 300mm long (designed for standardisation rather than a specific build volume). MDF is 18mm. NEMA 17 stepper motors, RAMPS 1.4by smerrett79 - Smart_Rap
Apologies for not logging very well - I have started building. Has anyone needed to edit the configuration.h to change x and y directions to work with the home command on repetier host or a similar application? Does anybody know why temperature sensor 1 is marked as -1, a thermocouple? I bought the inductive sensor with the model number given in the Youmagine BOM and have connected the +v aby smerrett79 - Smart_Rap
The PLA bearings are intriguing. I wonder if you can print nylon ones with lower friction and longer working life. There's lots of design that could make these bushings more feasible for reprap - e.g adjustable and quickly replaceable with minimum disassembly of the printer. Does anyone have any idea of lifespan?by smerrett79 - Smart_Rap
Is this what you are after? See my pre-build questions thread if that doesn't work.by smerrett79 - Smart_Rap
I've just tried 2560 on my nascent build and it seems about right. Yet to calibrate though.by smerrett79 - Smart_Rap
Try these. Haven't put it all together yet but followed the Thingiverse smartrapcore comments where a guy says how to adjust the openjscad code for E3D. Fit seems like it could work on my Lite6 which I have offered up to both parts:by smerrett79 - Smart_Rap
I am planning to use a Lite6. Same bracket/clamp dimensions AFAIK. Do you want my file for the mount?by smerrett79 - Smart_Rap
@rcjoseb, thank you for the tip - did you find that there was play in the bearing/bolt until you put the belt under tension or was the bearing firmly held in place without play before the belt was installed? I have filed down those rims and there's a bit of play (608 ID vs 8mm rod OD).by smerrett79 - Smart_Rap
Great info guys, thanks. Snapped a small but critical piece of mdf in my 2 up extruder last night so am in damage control and resilience mode! I have had real trouble printing the little protruding rims around the 8mm 608 bearing holes. I'm printing it on its side because that's the natural orientation to print the other features but I end up with a lumpy or absent rim, leading to the bearing rby smerrett79 - Smart_Rap
@madmike8, thank you very much. What number of perimeter layers did you use? I haven't attempted ABS yet as I have been printing in the house. It's mild enough to move operations to the garage if I need to. What sort of ventilation setup do you use for abs?by smerrett79 - Smart_Rap
Hi everyone, I am about to build my smartcore as my second ever printer (have a QUBD Two Up). I am using the openjscad tool to generate my printed parts - it's such a great concept for customisation! I have chosen a build volume which corresponds to all the smooth rods being 300mm. I'm using 18mm mdf (the glue is drying as I type). If you're in UK I can't recommend the B&Q free cutting servby smerrett79 - Smart_Rap