Tweaking the blobs out

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LePaul
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Tweaking the blobs out

Post by LePaul » November 9th, 2016, 6:50 pm

Ultimaker Silver PLA

210, 220, 225. Maybe more fan at 225?
IMG_4673.JPG

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Izzy
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Re: Tweaking the blobs out

Post by Izzy » November 10th, 2016, 4:08 am

Try 230'C just to see if it is to high
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Re: Tweaking the blobs out

Post by LePaul » November 10th, 2016, 8:06 am

I think I will up the retracting distance from 4.6 to 4.8 and see how that goes too

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Re: Tweaking the blobs out

Post by Titus » November 13th, 2016, 5:12 am

For me this was solved using Ruby nozzle a dual fan(can't tell which did the trick as both were installed at the same time)

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Re: Tweaking the blobs out

Post by LePaul » November 13th, 2016, 5:27 pm

Well the printer has the dual fan. Ultimaker PLA is a much different creature than the ColorFabb I have used almost exclusively in the past

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Re: Tweaking the blobs out

Post by Izzy » November 13th, 2016, 5:59 pm

The Ultimaker filament was ok at a push, but not as good as ColorFabb or Faberdashery PLAs
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Re: Tweaking the blobs out

Post by LePaul » November 13th, 2016, 6:12 pm

I'm just trying to figure out how to make a decent print with it!

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Re: Tweaking the blobs out

Post by LePaul » November 13th, 2016, 10:05 pm

I have a little bit of Colorfabb Dutch Orange and thought I'd print robots in each filament and see if both get blobs. Both do

I even checked the extruder Hobbes piece. It was clean but sometimes I notice nothing moves when I manually crank. Should I adjust that bolt tighter on the U-bracket/clamp piece?
IMG_4710.JPG

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Re: Tweaking the blobs out

Post by LePaul » November 13th, 2016, 10:28 pm

I wonder how long the hobbed bolt lasts...is it time for a new one?

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Re: Tweaking the blobs out

Post by LePaul » November 14th, 2016, 9:14 am

Well I can see the filament moving in and out of that extruder drive very nicely. I removed the filament and took a small brush to the surface while slowly rotating it. No debris, so it isn't dirty.

I'm truly stumped! What's causing the blobs!

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Re: Tweaking the blobs out

Post by Titus » November 14th, 2016, 9:46 am

Are you running a Ruby Nozzle in the UMO?

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Re: Tweaking the blobs out

Post by LePaul » November 14th, 2016, 9:50 am

No, the standard brass one. I've done atomics and it's clean.

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Re: Tweaking the blobs out

Post by Izzy » November 14th, 2016, 11:53 am

Two questions, what layer height are you using?
The photos attached are at 0.1mm (100um) layer heights. 210'C Nozzle,50'C bed at 45mm/s.
Material is Ultimaker PLA red.
And what are you using to photograph with, good quality images :-D
Attachments
2016-11-14 16.45.23.jpg
2016-11-14 16.40.40.jpg
2016-11-14 16.46.15-1.jpg
Izzy.

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Re: Tweaking the blobs out

Post by Titus » November 14th, 2016, 12:03 pm

Paul, you are sitting on a stash of Ruby Nozzles right. So I'd say pop one in(or pop one in that comes from your UM2+), and see if that helps ;)
You remember that geared heart topic I had? Loads of blobs everywhere. After installing dual fan and Rubby Nozzle it was gone 100%. Same filament, same settings(albeit a little hotter to compensate for the ruby nozzle).

Since you already have the dual fan, the ruby nozzle is my only idea :P

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Re: Tweaking the blobs out

Post by LePaul » November 14th, 2016, 1:36 pm

My only concern putting the ruby in is I have to mess with the brass pipe fitting into the heater block. As I recall, just removing the original nozzle with the ruby leaves it sitting flush with the heater block.

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