owen

Sorry I meant 0.12mm layer height :oops:. So that you are extruding at a lower rate.

An ebay seller from Victoria is selling rod

Try 1.2mm layers or more heat or print slower

I've put mine in back to front too. It only killed the driver. The new pololu drivers will come with a heat sink.

More fill would help. But definitely you thin top/bottom is the problem. Your fan running at full will help. Mine doesn't fill enough on the top layer till 0.6mm when I use 10% fill.

Polulu drivers work. Drop in replacement as far as I know. I've replaced a few of mine.

Click on File then Preferences and then set dimensions for the Printer Head size. Sorry I don't know the defaults.

This is the pen someone else was using Fine-Tip Red Color Staedtler Lumocolor Permanent Marker 318-2 Owen

I thinks it's more feasible to make a pen plotter for your UM and get a suitable pen for the job. Check out Thingiverse, It's been done like that before.

Good one Simon, Thanks for the writeup.

Thanks George, I'll keep looking.

Hi If it turns initially then possibly the Pololu driver is over heating Have a look at it and see if the heat sink has come off or the fan underneath is not spinning. After that look up in the wiki how to adjust the trimpot on the Pololu driver

I couldn't find MIC6 aluminum in Australia. Anyone know where/how to get it or similar from here?

I think it would be good providing it is flat enough. I have glass over a MK2 heater at the moment but find the edges are a bit cool so aluminium would spread the heat better I think.

What's your retraction speed Nick. I recently noticed mine wasn't always pushing back as much as it retracted. The motor would squeal and it must have been missing steps at that point. So I backed the setting back from 45 to 30.

Thanks George, I was hoping you would chime in.

I expert Settings you will find Infill Overlap (%) for this. Though you may have loose short belts or another problem which is causing the infill not to touch the walls. There are many posts and pictures in this forum regarding this issue.

Correct I'm fairly sure the extruder is 1/16

You may have the jumper set for z to 16 steps instead of 8. That would cause half height but still extruding full amount

Hi Gman From the looks of this print and the pic of your previous settings maybe your fan if off. I suggest you reset your profile to default in Cura and then change your filament setting back to 1.71mm if that's what it measures to. You could then also turn off the raft and try another print.

Yep it sounds like a sound from the belt. One of the Y belts in particular. You'll notice it always makes the sound at a certain point when moving in the Y direction. Can you take a video of each of the 6 pulleys involved?

Hi Gman What's your printer?

Looks as good as prints get. Well done.

I think it is related to the belts/pulleys. Possibly a pulley is not properly in line with the belt so the side of the belt rides up on the flange and then falls down again. Maybe look for this or do a search on the forums for 'Strange noise' or 'strange sound'

Great work Peanudt Thanks for your efforts. I'll give that lowering acceleration a go. I've been printing at 60mm/s so it may make a greater difference at these speeds.