4 Spool Holder for Kobra 3 v1 & v2

READ THE INSTRUCTIONS FIRST BEFORE PRINTING!

This was Designed for machines that don't have an ACE Pro.

Here's a Four spool holder I designed for the KOBRA 3 v1 & v2. Along with the X axis PTFE holder with pneumatic connectors. I recommend printing the towers upright instead of on its side. when the towers are printed on its side will alter the holes a bit. That's not to say you can't print them on its side. When printing make sure to adjust the X-Y hole compensation. Mine was set at 0.05mm but every machine will vary. I have provided a measuring tool to calibrate your machine. Use a Vernier Caliper to measure the hole in the tool. Adjust accordingly.

PRINT THE TOOL FIRST TO SAVE YOU HEADACHE!!!!!

I printed the lower towers first. Then the Middle towers, upper towers, the support bars and finally the rollers and bearing pins.

The pins are directional the wider side goes into the bearings.

Note: the left side rollers and pins are longer

The Towers and parts were printed using PLA.

The PTFE holder Is printed with PETG. Again, use X-Y hole compensation when printing.

And as always slower speeds produce better prints but that's at your discretion.

Measuring Tool:

1. Big hole should measure 8.1 mm
2. Medium hole should measure 4.3 mm
3. Small hole should measure 3.0 mm

Infill and walls:

1. 15% rectilinear infill
2. 2 walls

Tree Support settings are as follow for best results:

1. Top Z Distance = 0.16mm
2. Top Interface Layers = 5 layers
3. Bottom Interface Layers = 2 layers

Brim:

1. 8mm

PTFE Holder Settings:

1. Infill 15% rectilinear
2. 2 walls

Assembly:

1. Glue the outer towers together.
2. Screw on the lower support bracket at the bottom.
3. Install the lower middle tower (you can use 2 screws or 4)
4. Install the upper middle tower and use 2 screws to secure it
5. Install upper support bracket.
6. Install the pins into the rollers use glue to fix them to the rollers.
7. Finally install the bearings.
8. When installing on machine holder I used a bit of grease to slide in smoothly.

PTFE Holder Assembly:

1. Install Pneumatic connectors in the 4 larger holes
2. Make sure the Tube goes into the grove in the holder below the pneumatic connector
3. PTFE tube Length 4 x 565.15 mm (22.25 in.)

Material:

1. PLA (Color of Choice) 543 g
2. PETG (Color of Choice) 15 g
3. PTFE Tube
4. 4-Pneumatic connectors
5. 8 608 bearings
6. 18 Screws (3 mm x 16mm coarse thread) (#4 x 1/2" coarse thread)

Amazon Links:

1. https://www.amazon.com/608-2RS-Ball-Bearings-Skateboard/dp/B0CX8CDL7D
2. https://www.amazon.com/dp/B0F5HK1F3S
3. https://www.amazon.com/dp/B0CGV2JY8M
4. https://www.amazon.com/Stainless-Tapping-Drywall-SG-TZH/dp/B0B3LPBG1Y
5. https://www.amazon.com/Glue-Activator-Cyanoacrylate-Super-Accelerator/dp/B0D4QZBTHZ

THANK YOU for your support!

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