Parametric/Adjusable Replicator1 Spool Holder
by JoeyC, published
A ball bearing spool holder for the Replicator1 that can quickly adjust to hold different spool widths. Saves space behind the printer because the spools come off by going straight up.
I was looking for a ball bearing spool holder for the replicator1 but the only ones I could find sat on the table which was a problem with the cables in back. Also, I didn't like the way the spool could twist on the ones that used multiple bearings to handle different sizes.
I designed this one to mount on the back of the Replicator1 just like the stock holder. Also, different width spools can be used by just moving the inner support to a different slot.
The spool widths currently supported are from about 40mm wide to about 85mm wide. The supported spool widths can be changed in the OpenSCAD source code.
There is also a desktop version: http://www.thingiverse.com/thing:272532
I don't know if this also fits a Replicator2, If someone could check that I'd apreciate it.
- Printed parts from both STL files.
- 4 #608 skate bearings.
- 14 #1 x 3/8 Button head servo hold down screws. You can get these from J&R Hobby Hardware at: http://www.jrhobbyhardware.com/shop/index.php?main_page=index&cPath=108_109
Print both STL files at a .25mm Layer height, 25% infill, with 2 extra shells. Both ABS and PLA work, but I prefer the PLA because it's stiffer.
Slide the 4 bearings onto the posts.
Use 4 screws to attach the bearing keeper disks.
Put the mounting bracket into the slot in the top of the tall bracket. (It goes on the other side from the bearings) It's a tight fit, you may have to sand it a bit. It goes with the long side facing up as show in the picture. The mounting bracket should go in until it's flush with the other side of the tall bracket.
Use 6 screws to mount the arms to the tall bracket. They go with the slots facing in.
Use 4 screws to mount the end plate (The part without bearings) to the end of the arms.
Put the spool holder into the Replicator1. It goes in just tlike the stock holder.
Drop the inside bearing bracket into the correct slot for the spool you have. Spools from about 40mm to 75mm are supported. The bracket goes with the notches in the tabs on the bottom. It should sit flush with the top of the arm.
You can change the spool widths by updating the array variable SpoolWid. Just make sure the first one is the biggest and the last one is the smallest. You can add more spool widths as well, just make sure there is at least 3 to 4 mm between them so the spaces between the slots don't get too small. Also, change the variable SpoolCnt to the number of spool widths you have.
To print all the parts you need to generate two STL files. Changing the variable DoArms from 0 to 1 selects which set of parts will be drawn.
There are many other parameters that can be adjusted. Please see the source code.
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Parametric/Adjusable Replicator1 Spool Holder by JoeyC is licensed under the Creative Commons - Attribution - Non-Commercial license.
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