RailCore Y-Rail Alignment Tool Y-RAT

Railcore Y-Rail Alignment Tool (Y-RAT). Will work with or without halo. Use these tools together with clamps while…
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updated October 30, 2022

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Railcore Y-Rail Alignment Tool (Y-RAT). Will work with or without halo. Use these tools together with clamps while tensioning your belts to make sure your Y-rail stays parallel to your right 1515 extrusion.

There are tabs at the bottom of the tools that go against the bottom of the right 1515 extrusion for easy alignment while tightening the clamp.

Print 2 of the same STL. This works great when you are first building, working on the belt path, or (how I usually use them) with the air print method of belt tensioning. That method can be done with the macro below, and double checking the Y-rail is parallel to the right extrusion when you've got the belts just to the point of not vibrating. You will have to disable the motors to move the Y-rail back to make contact with the Y-RATs to confirm of course. You can get fancy and modify the macro to home X and Y at the beginning and disable motors at the end if you want so you don't have to do it manually.

IMPORTANT: be sure your fan doesn't crash into the Y-RATs at X=270BEFORE you run this macro!

; Air Print a box for belt adjustment.

; First belts should be loose, almost dropping off.

; Run the below code and the front and back belts will vibrate like a floppy guitar string.

; Tighten a little bit and re-run this macro until the belts get to a point where they don’t vibrate.

; At that point, you’re done.

; Home first then drop the bed 25 mm. You should do this manually, but uncomment to do automatically.

;G28

;G1 Z25

; X axis homing

G91

G1 Z4 F200 H2

G1 X-300 F3000 H1

G1 X4 F600

G1 X-10 H1

; Y axis homing

G1 Y-300 F3000 H1

G1 Y4 F600

G1 Y-10 H1

G1 Z-4 F200 H2

G90

G1 X10 Y10 F6000 ; front left corner

G1 X10 Y290 F6000 ; back left corner

G1 X270 Y290 F6000 ; back right corner

G1 X270 Y10 F6000 ; front right corner

G1 X10 Y10 F6000 ; front left corner

G1 X10 Y290 F6000 ; back left corner

G1 X270 Y290 F6000 ; back right corner

G1 X270 Y10 F6000 ; front right corner

G1 Y150 F6000 ; center back

M18 ; disable all motors so you can check to make sure the Y-axis is parallel using YRAT tools

Category: 3D Printer Accessories

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The author marked this model as their own original creation. Imported from Thingiverse.

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