INBXX Mod — PTFE Mount with Pneumatic Connectors
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A more secure and versatile connection of PTFE tubes to their mounts
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Now for both PC4-M10 and PC4-M6 connectors!
This is a modified PTFE mount used for the spool roller variant of Voxel3D's INBXX system that adds a PC4-M10 or PC4-M6 connector to secure the PTFE tubes.
I use the INBXX to feed my Core One INDX but found that pushing filament into the long PTFE tubes led to the PTFE tubes sliding out of the PTFE mounts. So I came up with a modified mount that follows the original design language but adds a pneumatic connector to it. My first published iteration was for a PC4-M6 connector, which preserved the original design language to the max. Now I also support the more commonly found PC4-M10. I tried to stick as closely as possible to the original design language, it's just a tiny bit bulkier.
STEP files provided for modifications.
Printing and Assembly
I suggest printing the mount with PETG, 0.15mm layer height, 3 perimeters, 15% cubic infill. No supports required.
You will need one PC4-M10 or PC4-M6 connector for each mount. You can purchase them on
Amazon:
PC4-M10 https://www.amazon.com/StLiSuYmx-Pneumatic-Connector-Fittings-Compatible/dp/B0F62FZK4R
PC4-M6 https://www.amazon.com/PC4-M6-Pneumatic-Straight-Suitable-diameter/dp/B0FCX9ZK9Y
or Aliexpress:
PC4-M10 https://www.aliexpress.com/ssr/300001493/
PC4-M6 https://www.aliexpress.us/item/3256811982655259.html
(If links are invalid, just use the search function on Amazon or Aliexpress, there are dozens of vendors that sell this stuff)
The M10x1 thread should print just fine as is.
The M6x1 thread is borderline printable in the orientation that is best for the rest of the model. So be careful when you screw the connector into the mount and keep checking that it goes in correctly. I strongly suggest using an M6x1 tap to prepare the hole if you have a tap-and-die set. It makes a huge difference.
Don't over-tighten the connector or you may crack the plastic.
The new mount is a drop-in replacement for the original mount. Use the original hardware to secure it to the extrusion. Push the PTFE tube from the printer into the connector and add a small piece of PTFE tube to the front of the mount. As the new mount is a bit taller than the original you may have to push the two roller bars on each tier of the INBXX a few millimeters back.
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