Ratrig V-Minion 1.1 Y-Axis Live Shaft

BETA 2

Restored the logo, I put it at an angle. Minor reinforcements, still needs a tiny bit of cleanup for some artifacts that were leftover. Reduced the size of the area for the bearing stack by another 0.7mm.

Looking good - need to belt it up to test the alignment.

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Description

Convert conventional toothed idler design to a live shaft design. New hardware is required. Done mainly as a technical exercise, the old design was fine of course.

Also added a sacrificial layer inside the large M8 holes to support the bore - it had ugly print quality originally (spaghetti).

Printing

Layer height: 0.2mm (required)

Fill: 40%

The rat side should be down on the plate. 0.2mm layer required because I added 0.2mm sacrificial layer inside the big holes to improve print quality (see photo).

If printing in ABS/ASA, apply 100.3-100.5% shrinkage compensation.

Installation

Probably test-fit the bearing stack before install to make sure it isn't impossibly tight.

Install both F695 bearings into the provided pockets. Stack in this order, insert the 5mm shaft through them:

1. F695
2. 1mm Spacer
3. Pulley
4. 1mm Spacer
5. F695

The shaft probably needs to be inserted from the outside of the printer but the very long hole leftover from the bolt was left, so you could use a shaft exceeding 50mm, but it would be very hard to insert it that far.

To uninstall, the access hole on the far side of the part is still there, only the hex was eliminated, so you can insert a tool to push out the pin (shaft).

BoM

Typical 5mm live shaft parts needed:

• 2 x F695 bearings
• GT2 9mm Pulley
• 5x35mm smooth shaft, slightly longer is acceptable
• 2 x 5x1mm spacers or the Ratrig High Precision Spacer

Discarded hardware:

• GT2 9mm toothed idler
• M5x50mm bolt
• M5 hex nut