UN-solved: Need a S3D GCODE

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Matt_Sharkey
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Re: SOLVED: Need a S3D GCODE

Post by Matt_Sharkey » Mon Aug 03, 2015 1:08 pm

20150803_115625285_iOS.JPG
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Long weekend, but i STILL managed to print 3 filament drives, one for home, one for work, and one for "OH S#@*! STOP STOP STOP STOP!"

The supports were a bit of a pain to remove, and the fit was pretty tight, I guess these are just symptoms of PETG? I had to do a good bit of filling/sanding. and the Filament hole needed drilled (yes drilled), but the printer is back together; and with NEMA mounts!

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jimc
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Re: SOLVED: Need a S3D GCODE

Post by jimc » Mon Aug 03, 2015 2:08 pm

Being tight is not a petg trait but supports being hard to remove is. You should always drill the filament path with a 2mm bit. That needs to be a precision smooth bore. A printed horizontal hole isnt gonna cut it. Not for top performance anyway. To keep your petg prints to dimensional spec, scale up your print in x and y by 0.4%

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Jules
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Re: SOLVED: Need a S3D GCODE

Post by Jules » Mon Aug 03, 2015 4:51 pm

Those turned out great Matt! Nice finish! :D

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Matt_Sharkey
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Re: SOLVED: Need a S3D GCODE

Post by Matt_Sharkey » Mon Aug 03, 2015 8:09 pm

since replacing the filament drive, it keeps mashing up filament and jamming about 5 minutes into the print. uhhhhgggg

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PcS
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Re: SOLVED: Need a S3D GCODE

Post by PcS » Mon Aug 03, 2015 8:11 pm

Did you drill the filament hole out ? 2mm drill bit ?

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Jules
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Re: SOLVED: Need a S3D GCODE

Post by Jules » Mon Aug 03, 2015 8:48 pm

Check the tension on your filament drive screw - it might be too tight.

And if that doesn't do it, you might need to ream the hole again. It needs to be a straight smooth path for the filament - i twirled a 2 mm wide, extra long drill bit through mine to make sure the path was smooth and perfectly straight. Any bend at all is going to jam up the filament, as will any junk left behind in there. (Make sure you can see sky through the hole when you look through it.)

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Matt_Sharkey
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Re: SOLVED: Need a S3D GCODE

Post by Matt_Sharkey » Mon Aug 03, 2015 10:01 pm

drilled it twice. bit is standard size, just shy of 2mm but the hole is clear through, and I can pass the filament through easily.

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Jules
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Re: SOLVED: Need a S3D GCODE

Post by Jules » Mon Aug 03, 2015 11:41 pm

Retract the filament completely and look at the end that went in. If it is smashed into an oval shape, flattened, or stripped in any way, loosen the tension on the adjustable filament drive screw at the top.

(If the gear teeth left deep grooves in the filament, it's also a sign that the tension is too tight.)

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Matt_Sharkey
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Re: UN-solved: Need a S3D GCODE

Post by Matt_Sharkey » Tue Aug 04, 2015 1:01 am

I get clunking and chatter from the extruder, E-Stop, then try to retract, can get 5mm retracted then it gets caught on and clunks again. Pull the thread and its all mashed up, but still connected. I suppose the tension is too high...but it was barely tensioned on one of the trials. The gap for the bearing is a bit tight and it doesn't spin freely, could this be an issue?

For now the ABS is going back on as that is still in good condition

As for the ABS motor mount, that thing is already fatigued and this machine might have 100 hours on it.

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PcS
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Re: UN-solved: Need a S3D GCODE

Post by PcS » Tue Aug 04, 2015 1:04 am

The bearing does need to turn freely.

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