Thank you Viktor. But this is referring to XY positioning, correct? What diameter (thickness) of paste do you plan to use? I am concerned in making the paste diameter accurate enough to not exceed a 0.05 mm (50 micron) variability, meaning the thickness will always be what is supposed to, say 0.5 mm (500 microns) plus or minus 0.05 mm. So it could vary from 0.45 to 0.55, for example. I believeby milner - Mechanics
QuoteMKSA Considering the requirements, it is easy for someone who has the appropriate background of course. Yeah, I figured that out from the previous users' comments (which were very helpful). QuoteMKSA The accurate extrusion of this gel the way you want it, this is what you have to focus on. So do you have a solution for the extruder issue? Or are you just here to point out the problem witby milner - Mechanics
I didn't know XY resolution was that easy to achieve. This is the first 3D printer I am attempting to build. It will be a hydrogel paste.by milner - Mechanics
QuoteMKSA I suppose you have solved the problem of the extruder because you need to achieve less than 50 micron thickness variation of the extruded paste. How do you plan to do it ? Thanks for bringing it back to the original topic. Yes, the variation would need to be +/- 50 microns from the extruded paste thickness. The thickness of the extruded paste itself can be much larger. Honestly, I don'by milner - Mechanics
Quotedc42 At lower currents, microstepping is less accurate because the detent torque interferes more with the torque due to current. Great advice, I forgot to think about microstepping ability and potentially skipping steps when running at lower currents. I was just looking at these 2A motors because they were a good deal, but I will try and find some in the 0.5A-1.2A range. QuoteDust I am notby milner - Mechanics
Okay, so just to be clear, for example the arduino mega 2560 is an 8 bit controller and you wouldn't recommend it if I wanted a glcd? Is the purpose of a glcd only to allow printing without the use of a computer, or does a glcd have other purposes? I'm planning on running 1.8 degree steppers that are rated at 2A and driving them though pololu A4988 black edition driver carriers, but due to heatby milner - Mechanics
QuoteDust See and throw in some random settings ^ THANK YOU! I'll probably go with 1.8 degree steppers, 8 tooth 2mm pitch pulleys, and an 8bit controller (unless you'd still recommend a faster controller). I'm curious as to whether the microstepping on drivers can be controlled (increased/decreased) easily once the printer is built, just for versatility with regard to changing the speed/resby milner - Mechanics
Thanks for the info! That makes sense, so it is pretty much guaranteed the resolution of a cartesian printer with 1.8 degree steppers is 200 microns? I am trying to build my own printer from scratch so to achieve 100 micron resolution would I just need 0.9 degree steppers? Or does the resolution of the printer depend on more than just the stepper motor revolutions? If so, what else would I need tby milner - Mechanics
Hello All, I am new to 3D printing, and am wondering about high resolution with a paste extruder. I would like to print with 100um (100 microns, or 0.1mm) resolution in the x and y axes. The needle extruding the paste does not need to be 100um thin (I would like it to be thicker), but I want to be able to have gaps between x-y layers of paste that are 100um. Basically, it would print something lby milner - Mechanics
Hello All, I am new to 3D printing, and am wondering about high resolution with a paste extruder. I would like to print with 100um (100 microns, or 0.1mm) resolution in the x and y axes. The needle extruding the paste does not need to be 100um thin (I would like it to be thicker), but I want to be able to have gaps between x-y layers of paste that are 100um. Basically, it would print something lby milner - Paste Extrusion Working Group