Introduction
This option replaces the Nema 8 Tool locking motor with a remotely driven cable drive system.
Reducing the carried weight on the carriage can result in higher quality prints at faster speeds/accelerations.
This option is in Beta! It has been tested internally enough to offer the current configuration to everyone, but is likely to change as development continues.
THIS GUIDE IS IN-PROGRESS!
Parts
- Print_CouplerHouse_Bottom
- Print_CouplerHouse_Top
- 9x17x5 Bearing × 4
- 3.17x3.17 Brass Coupler
- 5x3.17 Brass Coupler × 2
- M2x5 BHCS × 2
- 5x40mm Linear Rod
- 1.18x1.18mm Neodymium Magnet
- Print_LockCableGuide
- Print_LockMotorGuide
- Print_LockMotorMount
- Print_ToolLockIndex
- Print_RemoteLockClasp
- Print_RemoteLockMount
- 1:40 Worm Gear Set - BOM Specified
- BlackStop Hall Effect Limit Switch
- Dremel 2610914543 Rotary Cable × 2
- 3-4 Feet 1/8 by 3/16 PTFE Tube
- Nema 17 1.8 Degree Stepper (no pancake motors!)
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Install (2) M3 brass inserts into Print_RemoteLockMount
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Slide worm gear (drive) over 5mm linear rod. Leave loose.
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Slide (1) 3.16x5mm brass coupler onto linear rod as shown. Seat completely. Firmly tighten grub screw(s).
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Use a hand file or other tool to remove all grub screw material from beyond the outside diameter of the brass coupler.
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Slide (1) 9x17x5 bearing over the previously ground grub screw.
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Slide the worm drive gear up and against the brass coupler. Tighten grub screw firmly.
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Place worm gear drive assembly into the printed mount.
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Install and loosely secure Print_RemoteLockClasp using an M3 fastener into the previously installed heat-set insert.
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Slide (1) 5x10x4 flanged bearing over the opposite end of the linear rod until the bearing sits nicely in the printed housing.
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Slide the CNC_Tlock into and through the worm gear (driven) so that the flat protrudes past the surface. Line up the slot with the grub screw in the driven gear and secure.
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Depending on your worm gear, the grub screw may land on the round part of the t-lock. This is OK for now.
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Slide Print_LockIndexTool over the t-lock and against the face of the driven gear. Use a transfer punch or similar tool to mark the center of the (2) outer holes.
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Drill 2 1.6mm holes into the driven gear using the marks as a locator. Drill depth should be at least 6mm. Use an M2x0.4 thread tap (preferably a bottoming tap) to carefully tap the brass threads.
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Press (1) 3.16x3.16mm magnet into Print_ToolLockIndex until flush. A small bit of superglue can help retain the magnet if the fit is too loose.
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Attach the adjustable lock indexing assembly to the driven gear using (2) M2x5mm fasteners. Adjustment will be carried out later in this guide.
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