Search found 176 matches

by chumm
Fri Feb 02, 2018 5:59 am
Forum: Hardware
Topic: Prusa i3 MK2S Clone Bearings
Replies: 3
Views: 1692

Re: Prusa i3 MK2S Clone Bearings

Misumi is generally considered the gold standard in LM8UU bearings but they're hard to find and expensive. Igus Drylin bushings are whisper quiet, but they're not well-suited to holding much weight so they shouldn't be used on the X carriage. I use Igus bushings on Y and for X and Z just buy a bunch...
by chumm
Tue Jan 30, 2018 10:09 am
Forum: Help requests / Purchasing assistance
Topic: Rebuilding a Cobblebot
Replies: 3
Views: 1410

Re: Rebuilding a Cobblebot

lol how did you know I was looking at the Yoda site? That article seems to come up pretty high in searches, I found it when I was first looking at building a printer and I bought 0.9s based on the image. Someone else on this forum also referenced it when talking about feeling the need to buy 0.9s. ...
by chumm
Tue Jan 30, 2018 9:59 am
Forum: Help requests / Purchasing assistance
Topic: Zits occuring on every layer
Replies: 10
Views: 3499

Re: Zits occuring on every layer

I think it would be worth trying another slicer, not to replace your chosen slicer, but to isolate a clean batch of settings in your gcode. Slic3r Prusa edition isn't too hard to get set up if you're pretty familiar with your printer. You can use one of the default print settings (I'd go with 0.15mm...
by chumm
Sun Jan 28, 2018 5:32 am
Forum: Help requests / Purchasing assistance
Topic: Zits occuring on every layer
Replies: 10
Views: 3499

Re: Zits occuring on every layer

Yeah I see what you mean, in the latter print it's clear that the line is starting after the gap, so the extra filament deposit is occurring at the end of the line rather than the beginning of a new one. I can't think of a physical reason this might be happening, nor of any Marlin setting that could...
by chumm
Sat Jan 27, 2018 4:28 am
Forum: Help requests / Purchasing assistance
Topic: Rebuilding a Cobblebot
Replies: 3
Views: 1410

Re: Rebuilding a Cobblebot

I'm not really familiar with the Cobblepot, but it looks like it runs on a RAMPS board, if so you can get Marlin firmware on it which works with pretty much anything. If you pick up a MK42 clone bed you can use the firmware posted on this forum to get it to work. I'll note that 0.9 degree motors rea...
by chumm
Sat Jan 27, 2018 4:12 am
Forum: Help requests / Purchasing assistance
Topic: Zits occuring on every layer
Replies: 10
Views: 3499

Re: Zits occuring on every layer

This looks like a retraction issue, but possibly combined with a temperature issue. The filament appears to be oozing while traveling to start the new layer, which is what retraction is designed to prevent, but printing at a higher temperature can accelerate the ooziness of the filament. Here's a re...
by chumm
Thu Jan 18, 2018 5:59 am
Forum: Hardware
Topic: 12V 30A PSU?
Replies: 27
Views: 4903

Re: 12V 30A PSU?

IIRC you have a genuine E3D V6? You can use your multimeter to measure the resistance across the leads of the heater to see if it should be working. Here's the E3D wiki reference for the resistance values: https://wiki.e3d-online.com/E3D-v6_Assembly#Heater_Cartridge I'm having a hard time envisionin...
by chumm
Wed Jan 17, 2018 6:14 pm
Forum: Hardware
Topic: 12V 30A PSU?
Replies: 27
Views: 4903

Re: 12V 30A PSU?

Did you happen to check the voltage coming from the PSU? There should be a little potentiometer you can use to adjust the voltage, it's possible it came dialed down under 12v. Are both inputs on the board connected to the PSU? I don't know a ton about how power is routed on RAMPS but pinouts show on...
by chumm
Wed Jan 17, 2018 4:42 pm
Forum: Hardware
Topic: 12V 30A PSU?
Replies: 27
Views: 4903

Re: 12V 30A PSU?

It's hard to say, but of course the way to determine if it's the new PSU is to just reconnect the old one without the LEDs and see if you experience the same problem. Part cooling fans can contribute to thermal runaway by blowing too much air on the hotend. They should be positioned carefully to blo...
by chumm
Wed Jan 17, 2018 2:44 pm
Forum: Hardware
Topic: Stepper motor voltage
Replies: 1
Views: 1389

Re: Stepper motor voltage

Yeah, the motor drivers will handle the output for you, there's no need to change motors. Heaters and fans are typically what need replacing when you step up to 24v.