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PLA Heart Gears for Replicator 2
von whpthomas
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Many of us have been frustrated to discover that the pins for emmett's Screwless Heart Gears are not PLA compatible. They are too stiff, and in my experience, attempting to force them in can crack the pins and damage the piece itself.
So I set about trying to design some alternative pins for PLA. My first attempt was to make flexible end tabs, but while this worked, the gear heart axle is too short to support this approach. In the next attempt, I altered the internal structure of the tip of the pin to make it more flexible for PLA and redesigned the protrusions.
These new pins were designed using an ACIS solid in Shark FX (sfx file included) so will behave well with Makerware, ReplicatorG and skeinforge. They snap into place with moderate force and rotate freely.
UPDATE
Version 2 of the pins has 0.25 mm more protrusion on each side at the tip, they still insert with moderate force but have a firmer hold.
So I set about trying to design some alternative pins for PLA. My first attempt was to make flexible end tabs, but while this worked, the gear heart axle is too short to support this approach. In the next attempt, I altered the internal structure of the tip of the pin to make it more flexible for PLA and redesigned the protrusions.
These new pins were designed using an ACIS solid in Shark FX (sfx file included) so will behave well with Makerware, ReplicatorG and skeinforge. They snap into place with moderate force and rotate freely.
UPDATE
Version 2 of the pins has 0.25 mm more protrusion on each side at the tip, they still insert with moderate force but have a firmer hold.
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