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1st print issue - PEEK fan Shroud.
Posted: Thu Apr 24, 2014 11:38 pm
by gibeaug
After performing the various pre-print calibrations, I printed the PEEK fan shroud in ABS according to the manual. Everything went fine as far as the print function. Inserting the fan into the shroud is a very tight fit -so much so that if I force it in, the shroud binds the sides of the fan and the blades will not turn. I am thinking of getting a small file and smoothing the fan compartment - but I was wondering if there is anything I need to check as far as the settings used in the software?
Anyone else ever run into this?
TIA
-George-
Re: 1st print issue - PEEK fan Shroud.
Posted: Thu Apr 24, 2014 11:50 pm
by Eaglezsoar
That is a common problem and you can file the opening until the fit is good and the blades turn.
You do not need to check anything. Happy Printing!
Re: 1st print issue - PEEK fan Shroud.
Posted: Fri Apr 25, 2014 12:06 am
by gibeaug
Thanks for the info - I like it when the simplest solution turns out to be the best
-George-
Re: 1st print issue - PEEK fan Shroud.
Posted: Sun Apr 27, 2014 3:51 pm
by dgriff
I also found that calibrating my extruder steps/min significantly helped getting the PEEK shroud printed properly without any filing. The default steps/mm were putting out too much ABS and making the walls too thick.
Re: 1st print issue - PEEK fan Shroud.
Posted: Sun Apr 27, 2014 4:42 pm
by Eaglezsoar
dgriff wrote:I also found that calibrating my extruder steps/min significantly helped getting the PEEK shroud printed properly without any filing. The default steps/mm were putting out too much ABS and making the walls too thick.
That's a good thing to find early in the game, that problem could have gone undiagnosed for quite some time, great job in finding it!
Re: 1st print issue - PEEK fan Shroud.
Posted: Wed Apr 30, 2014 10:01 am
by 3DR
I also found that calibrating my extruder steps/min significantly helped getting the PEEK shroud printed properly without any filing.
Is that the link in the build manual you followed to calibrate the extruder feed?
Re: 1st print issue - PEEK fan Shroud.
Posted: Thu May 01, 2014 8:11 pm
by dgriff
3DR wrote:I also found that calibrating my extruder steps/min significantly helped getting the PEEK shroud printed properly without any filing.
Is that the link in the build manual you followed to calibrate the extruder feed?
I actually used this one:
http://richrap.blogspot.ca/2012/01/slic ... s-and.html
From the article, extrude 30mm of filament (do it slowly so as to make as accurate as possible), then:
If it's exactly 30mm, then you already have a perfectly calibrated extruder
If not then this is how to set the new number in firmware-
Our firmware in this test was set to 700 steps per mm and we extruded 30mm of plastic.
700 x 30 =
21000 (E motor steps for 30mm)
For example if you actually measured 32.6mm then "21000/32.6 = 644" (so you need to put 644 into your firmware replacing the 700 we had before, re-compile and download and you can re-check again and your filament should now move exactly 30mm as you have just calibrated it.
If you measured 27.2mm then "21000/27.2 = 772" (put 772 into your firmware)
Doing this a few times got the extrusion dead-on for me. Of course we just enter the value in the EEPROM, so you don't need to re-compile and re-upload each time.
Re: 1st print issue - PEEK fan Shroud.
Posted: Thu May 01, 2014 8:56 pm
by JohnStack
I've printed that fan on a few printers. It is tight. ABS loves filing!
Re: 1st print issue - PEEK fan Shroud.
Posted: Fri May 02, 2014 11:48 am
by Eaglezsoar
I have some special bits for my dremel tool that I use for ABS adjustment.