Nimble Gimbal - Gimbaling Extruder Motor Mount for Zesty Nimble

thingiverse

Single axis gimbaling mount for mounting the extruder motor for a Zesty Nimble. Lowers amount of force that drive cable can exert on Nimble body and printer motion system. https://youtu.be/qfjgy3MI5Gg 12 June 2018 - Design (123D), stl and stp files for Style B version all included in Nimble_Gimbal_Style_B.zip file. Design, stl and stp files for original version are in Nimble_Uni_Gimbal_Motor_Mount_42mm_Threaded.zip 6 April 2018 - Updated with Style B captive nut version, anti-vibration washers and strain relief. Style B is easier to assemble as axle is a free bolt installed from the external face of the arm which allows assembly/disassembly with the arms attached to panel. Also, no tapping required. Very much work in progress - Style A (original) for 40mm length Nema 17 motor. Design and step files included in zip. Style B for any motor size. **Parts** - Style A: * M3 x 12mm Button/Socket Head Cap Screw - for bearing axles (Qty: 2) * 2.4mm drill (Style A only) * Bearing press of some sort * Small File **Tools** * M5 Tap (Style A only) * 4.2mm drill (Style A only) **Instructions** - Style A Size bearing housing to 6.9mm ("0.272") ~ remember the rueful expression that goes something like *"... i bored it twice and it is still too big..."* Carefully press bearings into arms. Assemble arms onto gimbal, ensure good alignment so that gimbal pivots freely. **Parts** - Style B: * M3 x 12mm to 14mm (+/-) Button/Socket Head Cap Screw - for mounting Zesty motor bracket (Qty: 4) * 5mm drill * Bearing press of some sort * Small File **Tools** * M5 Tap (Style A only) * 10mm(13/32") drill (Isolation Washers only) **Instructions** - Style B See exploded diagram. Size bearing housing to 6.9mm ("0.272") ~ remember the rueful expression that goes something like *"... i bored it twice and it is still too big..."* Carefully press bearings into arms. Size 3mm and 5mm holes if required. Insert nuts. Assemble arms onto gimbal, ensure good alignment so that gimbal pivots freely. Note that a single washer goes between the bearing and the motor mount on each side. **Printing** Mount and Arms: PETG recommended for toughness and ability to absorb vibration due to its lower flexural modulus but PLA or anything else with good layer adhesion should be fine. Isolation Washers: X60 recommended (you have a Nimble, you CAN print it no problem!!) TPU (i.e. NinjaFlex) or soft TPE should work but keep perimeter wall thickness low (<0.5mm??).