Aluminum HBP Arms For The Replicator!
by bottleworks, published
Have you been having issues with your MakerBot Replicator HBP arms warp and sag? The Replicator is a Revolutionary 3D printer pushing the limits of small scale 3D printing. As people reach new advances in desktop 3D printing, stability and consistency are critical. The original HBP arms are made of ABS plastic. Unfortunately, when the plastic arms are exposed to the heat generated by the HBP, they warp, sag, and otherwise move. This warping and sagging make it incredibly difficult to have a consistently level HBP. As a result, constant tweaks and adjustments are required. Another issue with the arms is the low mass. During high speed printing, the original, low mass arms, lightly vibrate. These vibrations contribute to further distort the object being printed.
Virtually eliminate these issues by upgrading to custom CNC milled aluminum HBP arms. These replacement arms are made out of a single solid piece of 6061 aluminum.
* The arms are designed to replace the original plastic arms with no other modifications.
* Additional mass. Fully assembled weight of 931.5 grams. The added mass reduces harmonics and vibration.
* No more constant adjustments due to unwanted arm movement.
* The upper bearing retainers help block loose items from falling behind the platform and getting lost.
You can find out more Information on the aluminum arms @ bctechnologicalsolutions.com/replicatorarms
Notice some grinding marks? Good catch! The arms photographed are a prototype set. Those grinding marks were from last minute modifications due to clearance issues. ALL production arms will have NO grinding marks - only clean, milled surfaces.
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If you need a design file for the arms, use the design files provided by MBI in Thing 18813 (http://www.thingiverse.com/thi.... There you will find all the design files for the Replicator 1. And the arms are the same for the Rep 1, Rep 2, and Rep 2X. You can start with those files and then mod them however you want.
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15% Infill/Octagon Pattern.
.27mm layer height.
I printed with full support, but with NO raft.
I've added a revised STL for all arms shipped 3/18/13 and later that are being installed in a Replicator 1. The older arms used different lower bearing retainers.
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