I upgraded my Replicator 2X with spring loaded extruder ( http://www.thingiverse.com/thing:222667 ).

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(jenia zelikman) #1

I upgraded my Replicator 2X with spring loaded extruder (http://www.thingiverse.com/thing:222667). It prints great Ninjaflex. I have a small problem though. When I get to printing something with slightest angle I get a very bad quality (small bulbs all over the print). Any Ideas?

(Nope Nope) #2

Pics of the prints would be helpful, that could be a number of things.
1st to mind though is over extrusion.

(Jeff Keegan) #3

Did that work for you? I upgraded the Makerbot Replicator 2X at work and it wouldn’t extrude at all unless I pulled up where the spring was (as if the spring weren’t strong enough). I then replaced them with the old extruders and they’re working way better.

(jenia zelikman) #4

@Jeff_Keegan it was the same for me because the spring is not big enough. I added a small rectangular ABS sheet about 2 mm thick under the spring and it works great.

(Jeff Keegan) #5

Hmm. Maybe it’s worth modifying the design to raise the mount at the bottom where the spring sits. …but I just got it working again. Note to self: do this when the constant jamming reminds you why you wanted to upgrade these in the first place. :slight_smile:

(Jeff Keegan) #6

Ok that didn’t take long. Switched BACK to the upgraded extruders, but printed SCH_Spring_Adj_rev1.stl from http://www.thingiverse.com/thing:62510 to use as a spacer to compress the springs a little more. We’ll see tomorrow if it worked well enough to make it through a large print (it’s been jamming with the old extruder due to any slight imperfections in the plastic).

(jenia zelikman) #7

@Jeff_Keegan Good luck! I am still fighting the Ninjaflex. I found out that curling is my problem. I am trying to adjust the temperatures to get over this. Keep us updated.