Hey! This thing is still a Work in Progress.
Files, instructions, and other stuff might change!
tinytim ultimaker feeder
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Published on June 25, 2012
Description
Decided to derive a feeder upgrade for my ultimaker over the weekend using only stuff I already had lying around.
This is a basic derivative of the stock ultimaker feeder, but allowing a rollerblade bearing to be used to press the fibre against the hobbed bolt using a spring-loaded end block.
The vertices in the model were placed by hand (approximately) but the whole thing prints fine and seems to work all right (so far).
This is a basic derivative of the stock ultimaker feeder, but allowing a rollerblade bearing to be used to press the fibre against the hobbed bolt using a spring-loaded end block.
The vertices in the model were placed by hand (approximately) but the whole thing prints fine and seems to work all right (so far).
Instructions
The whole thing was designed to allow me to use a rolleblade bearing as the "pressure roller" with which to press the fibre against the hobbed bolt. As these things are wider than 4mm, this required adapting a few more things and, while at it, I decided to implement the spring-loaded system seen on greg's extruder.
printed at .2 slicing using PLA on an ultimaker.
The end-stop needs a bit of post-processing on the round bit, but the current version is easier to print.
you'll also need the parts from the stock ultimaker feeder, one rollerblade bearing, two extra 3x30mm screws, two small springs and one 8mm bolt (or metal tubing)
Due to limitations of my ability to print overhangs, You'll also have to saw or file off the bottom (printing platform side) of the "hooks" so that they are flush with the recessed "bridge". Then the whole thing can hook into the ultimaker without problems.
It fits together only one way, you should be able to figure it out :-)
once I've tested this thing for a few weeks I'll try to improve it a bit more (if I find the time)...
edit:
-the parts have been rescaled to the right size. Now you can do a 1:1 print.
-the vertices have been positioned more accurately now.
printed at .2 slicing using PLA on an ultimaker.
The end-stop needs a bit of post-processing on the round bit, but the current version is easier to print.
you'll also need the parts from the stock ultimaker feeder, one rollerblade bearing, two extra 3x30mm screws, two small springs and one 8mm bolt (or metal tubing)
Due to limitations of my ability to print overhangs, You'll also have to saw or file off the bottom (printing platform side) of the "hooks" so that they are flush with the recessed "bridge". Then the whole thing can hook into the ultimaker without problems.
It fits together only one way, you should be able to figure it out :-)
once I've tested this thing for a few weeks I'll try to improve it a bit more (if I find the time)...
edit:
-the parts have been rescaled to the right size. Now you can do a 1:1 print.
-the vertices have been positioned more accurately now.
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License
tinytim ultimaker feeder by tinytim is licensed under the Attribution - Share Alike - Creative Commons license.
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What software did you model this in? Why isn't it scaled correctly?
The *.stl parts have been rescaled so that they are the right size now.
I used blender (still very much a noob). Scaling it is not a problem, but when I work on models I prefer to regard the blender units as centimeters than millimeters (and then I scale the whole thing 10x in cura).