Auto-Rewind SpoolHolder SPRING and HOUSE for 5 Spools on LackTop
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MMU2S & 5 spools on top of Lack enclosure require strong and reliable springs. They quick & easily shall be replaceable!
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- Printables
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- Other Printer Parts & Upgrades
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- Creative Commons — Attribution — Share Alike
Update Feb 2026:
THESE SPRINGS DO SIT in their houses - under tension - NOW FOR THREE FULL YEARS.
==> no loss of function or reliability.
Just wanted to let everybody know !!!
--- end of update ---
In my published Model I explained that my enclosure is higher, so I need to rewind 70cm Filament.
I tried several versions like Vincent's modular bir-directional one as well as Peter Larsens version - see remix below.
Vincent's spring strength is good but I do not like the handling of bidirectional spring. He uses 13 Revs and the spring blade is only 1.0 mm thick.
Thx to Peter Larsen I learned my own design and here is the result and adopted it to Dr. Tom Flints spring house - see remix below.
I modified Flint's spring house to easily push out a spring and replace for next test. The House does sit in Vincent's cludge and has 86mm space for a spring.
I CREATED Springs with 120mm diameter - to fit into the 86mm house. It works - simply wind the spring intil it is “compressed” enough to fit. This result in a more stretched spring body ( blade ) already having tension in the house in “rewinded” position.
I used less rewinds to give the spring enough space.
I used 1.2mm blade thickness and PETG.
The house is printed in PLA.
It works absolute fine and as expected / wished.