Thingiverse
NEMA 17 & 23 Stepper Motor Turning Tool *UPDATE* by Shaputer
by Thingiverse
Last crawled date: 4 years, 5 months ago
This tool requires a M3 x 20, M3 nut, a 3/8" X 1 1/2" bolt, 3/8" nut and washer. One crank fits NEMA17 and the other fits NEMA 23. The knob was derived from this great design: http://www.thingiverse.com/thing:17740. I made the crank.
I initially wondered why my Shapeoko 2 motors had a dual shaft. I found it was actually useful if you need to position the Z axis when the machine is not powered up. This crank takes advantage of that second shaft.
UPDATEhttp://youtu.be/6VvwGszE8Xo
This video shows that the stock version of Shapeoko 2 does TECHNICALLY function as advertised. However, it's very unreliable and can be downright dangerous. I had to go through 2 of those 1/4" thick sheets to get the small bracket above to cut properly. It's unreliable behavior wastes time and money on materials. That's what Inventables counts on, money from people having to buy materials. I have since discontinued using the machine until I obtain a TinyG stepper motor controller. The GRBLShield is poorly designed and allows way too much electrical noise to be generated which has caused my Shapeoko 2 to plunge unexpectedly into the waste board and actually breaking my fine engraving bits. This has happened twice when I invoked the Homing Command. The hard limits option doesn't work because of all the electrical interference so there's no protection. If you have to have a Shapeoko, buy the mechanical kit, NEMA 23 motors and TinyG. The full kit has faulty electronics and small motors. Who needs a glorified "Spyrograph" ?
I initially wondered why my Shapeoko 2 motors had a dual shaft. I found it was actually useful if you need to position the Z axis when the machine is not powered up. This crank takes advantage of that second shaft.
UPDATEhttp://youtu.be/6VvwGszE8Xo
This video shows that the stock version of Shapeoko 2 does TECHNICALLY function as advertised. However, it's very unreliable and can be downright dangerous. I had to go through 2 of those 1/4" thick sheets to get the small bracket above to cut properly. It's unreliable behavior wastes time and money on materials. That's what Inventables counts on, money from people having to buy materials. I have since discontinued using the machine until I obtain a TinyG stepper motor controller. The GRBLShield is poorly designed and allows way too much electrical noise to be generated which has caused my Shapeoko 2 to plunge unexpectedly into the waste board and actually breaking my fine engraving bits. This has happened twice when I invoked the Homing Command. The hard limits option doesn't work because of all the electrical interference so there's no protection. If you have to have a Shapeoko, buy the mechanical kit, NEMA 23 motors and TinyG. The full kit has faulty electronics and small motors. Who needs a glorified "Spyrograph" ?