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Re: Slight Z Banding / Ribbing - 5 years ago

So I think I solved my ribbing issue... Kind of following my list. Redesigned the motor mount to be able to adjust the alignment of the the motor and leadscrew Took another look at the part that mounts the leadscrew nut to my bed. Did some kinda crude analysis showing that worst case I could get ~0.4mm of deflection in the part. Over the length of the leadscrew this would more axial misalignm

by Marty56 - Printing

Re: Slight Z Banding / Ribbing - 5 years ago

Hi MCCarman, thanks for the suggestions! QuoteMCcarman OK. Im thinking this is an issue of binding/over constraining. Since you have a spiral coupler the resistance may cause the spiral to wind up/down instead of the platform moving the complete distance. I didn't notice anything with the spiral coupler the first time around, but am noticing the slits spacing changing slightly as it rotates. Th

by Marty56 - Printing

Re: Slight Z Banding / Ribbing - 5 years ago

A shot of the top of the z-axis. The mounts on the bottom are a mirror of the top: Interesting theory on the leadscrew. Mine is only a single start with 2mm pitch. I do have a regular & anti backlash version of the nut (anti-backlash pictured above) so may I'll try back to the regular version.

by Marty56 - Printing

Slight Z Banding / Ribbing - 5 years ago

I've been chasing a z wobble / ribbing / banding issue on my printer the past few weeks I'm hoping to get some advice on as I can't seem to find a solution on the forums or other places online. Here's an example of the issue on a cylinder (0.2mm layer, 45mm/s print, 205C extruder, 55C bed) The banding issue repeats every 2mm regardless of layer height which makes me suspect something is off in

by Marty56 - Printing

Re: CoreXY and CoreXZ support for Duet electronics - 10 years ago

I was using pronterface originally but have now switched over to using zombiepantslol's web interface. I'm working on calibrating my printer and trying to get some test prints done but i'm running into an unusual error when using cura. For example I've been trying to print a 1in x 1in x 1in cube. Using cura the print will start fine but my printer will continue speeding up to the point where the

by Marty56 - CoreXY Machines

Re: CoreXY and CoreXZ support for Duet electronics - 10 years ago

DC42, It's taken me a lot longer that I would've liked to put my printer together and it looks like you've beat me to getting any coreXY firmware out for the duet. The gcode configuration options are nifty as well. Last night I was finally able to get my coreXY gantry assembled and jogged it using your firmware. It looks like everything is working as it should. I should have my machine printing

by Marty56 - CoreXY Machines

Re: Why do SLA printers pull each layer? - 10 years ago

I don't have much experience with SLA printers but when you print a layer it cures the resin which is between the bed or cured resin and the glass surface. This adheres quite well due to Van der Waals forces (someone correct me if I'm wrong here) and makes it very difficult to pull the object straight up. Companies like Formlabs or even mUVe3D make use of a peeling function where one side of the

by Marty56 - General

Rambo Power Questions - 10 years ago

To my understanding, the RAMBO board has separate power inputs for the bed, mosfets, as well as the motors and logic. Would it be possible to supply different voltages to each of the power inputs? For example, could I supply 12 or 24V to the logic power input while supplying 5V to the mosfet input? Also, the fan outputs on RAMBO are also mosfet controlled correct? I would be able to use a fan a

by Marty56 - RAMPS Electronics

3 PWM Fans on RAMPS - 10 years ago

So, in Marlin, board config 35 corresponds to a RAMPS board where D10 is the extruder, and D9 and D8 are pwm controllable fans. Is there any easy way where D10 could also be treated as a PWM controlled fan in the firmware? If this isn't easy to do, then by installing the reprap fan extender (http://www.geeetech.com/wiki/index.php/Reprap_Ramps1.4_RRD_Fan_Extender), would I be able to successful a

by Marty56 - RAMPS Electronics

Re: E3D v5 versus v6 - 10 years ago

I had PLA jamming issues with the e3d v5 as well but this thread over at SeeMeCNC helped resolve my problems. Basically the jamming is caused by the non-specification on the bore length of the nozzle. This length is the length of the stated nozzle diameter. Users found that it varied anywhere from .5mm to 1.5+ mm. I shorted the bore length down to about 0.5mm by using mhackney's suggestions. I

by Marty56 - General

Re: CoreXY and Duet+RepRapFirmware - 10 years ago

I'm actually working on implementing coreXY in the RepRapFirmware as well and I think I've got it working. I'm currently printing / ordering the parts for my new printer and will be assembling in the next few weeks. So far I've been able to test with just steppers connected to the duet board and moves seem to be correct based on what you would expect for coreXY. I've anyone has a printer built I

by Marty56 - CoreXY Machines

Re: Using Frame for Linear Motion? - 10 years ago

I am planning attaching the extrusions to each other in the corners instead of relying on plastic parts to hold them together. I would use Mcmaster part number 47065T155 and then surround each corner with a printe part for the look. Do you think this would have the same kind of problems as just having printed corners?

by Marty56 - CoreXY Machines

Re: Using Frame for Linear Motion? - 10 years ago

I purchased the extrusions I thought I would need a little while back from Automation4Less. I got in touch with them through email and apparently their extrusions have a straightness tolerance of 0.0125 in per foot. Here is the technical information catalog Technical Info I'm going to test printed sliders with a two part C-shape so I can adjust the tension with a couple bolts. Edit because I su

by Marty56 - CoreXY Machines

Using Frame for Linear Motion? - 10 years ago

So I'm planning a coreXY printer with an aluminum extrusion frame. I've been thinking about using the aluminum extrusions for both the frame and the linear motion system. I'm not sure on the straightness of my extrusions yet but if they have a similar tolerance to smooth rods then I don't see much wrong with it. Does anyone see anything wrong with using the extrusions for linear motion as well as

by Marty56 - CoreXY Machines

Re: Printing Nylon Trimmer Line - 11 years ago

So I emailed the company who produces the maxpower trimmer line: I was told that there are small amounts of "processing aid" additives in this specific nylon trimmer line. Also I inquired if they take any precautions in extruding the trimmer line. Apparently the only precaution they take is to ventilate the area.

by Marty56 - General

Re: Hex nut options for leadscrews - 11 years ago

I'm using the leadscrew on the z-axis and am not too worried about backlash because the movement will always be downwards. I'd prefer to use metric leadscrews and that's where the issue comes in it seems, as the trapezodial thread shape requires a larger pitch than your standard m10 threaded rod.

by Marty56 - Mechanics

Re: Hex nut options for leadscrews - 11 years ago

How did you bolt the sleeves to the x-ends? Roton has plastic flanged nuts available as well as steel as well as threaded mounting nuts and compatible mounting flanges but this would be a pretty expensive solution.

by Marty56 - Mechanics

Hex nut options for leadscrews - 11 years ago

I'm currently working on sourcing the parts for a custom build and am planning on using leadscrew(s) to drive the z-axis. I've been looking at because of the relatively lower prices when compared to Mcmaster and the cut to length options. I would like to use M10 lead screws but am having trouble finding a hex nut with a matching pitch. Most M10 hex nuts have a 1mm pitch instead of the 2mm these

by Marty56 - Mechanics

Printing Nylon Trimmer Line - 11 years ago

I'm getting setup to print this nylon trimmer line:. I 'm waiting for the rest of the parts I need to convert my hotend to 1.75mm. A user on seemecnc got in touch with the manufacturer and was told that the line is made from virgin nylon 6. In the meantime I've been doing research regarding hotend and bed temperatures, the best way to get adhesion and any other printing tips and am finding lots

by Marty56 - General

Multimaterial Railway Concept - 11 years ago

On reprapro.com there is a blog post regarding multimaterial printing through the same hotend using a railway concept. Apparently this was attempted by one of his customers and I've seen reprappers here try similar things . I am currently working on building a coreXY Mondrian Variant with a bowden system and want to incorporate 4 color/ material printing. I have been looking at the Kraken from E

by Marty56 - Reprappers