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Shipping lead time is generally two weekends.

Buildlog.net Stepper Shield: Revision 3.0
Tutorial: Getting Started with your shield

Raw Boards
$11.99

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The straight PCB. This is the barebones board for the v3.0 Buildlog CNC Stepper shield. This board is the simplest way to route both signal and power to your CNC's driver circuitry and motors.
For instructions on the complete build, see our extensive guide to assembly and configuration.
Board kits
PCBs with board level components--add drivers (for sale below) to complete
$29.84

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The complete kit: everything you need to put together the v3.0 Buildlog CNC Stepper shield. Add either three or four Pololu drivers below, and you're shield is good to go.
For instructions, see our extensive guide to assembly and configuration.
Three Motor Power Supply
We present this beauty: To call it a wall wart would be an insult--



Big, unenclosed, cage type power supplies can be a hazard.
This Pololu switching power supply delivers an astonishing 36 watts at 12 volts. It's just the right size to run the standard three NEMA 17 motor CNC setup and saves you having to stash a power brick. To keep from having to mutilate your power cord, a 2.1 mm panel mount jack with 6" solid core leads along for the ride. UL and CE certified.
Driver Packages:
three drivers minimum needed to complete the board solution



Genuine, Pololu 4988 steppers capable of driving to 2.0 amps per coil.
Heat sinks are important and included at no additional charge. Additional forced airflow is always recommended.
Driver Modules
Driver Packages: Black Edition:
three drivers minimum needed to complete the board solution



Pololu 4988: Black Edition runs about 20% cooler.
While additional forced airflow is always recommended, these drivers will deliver about a fifth more power at the same temperature, or the same power much cooler, due to the four layer design having a layer specifically devoted to heat dissipation. The green boards are a standard two layer configuration.
These boards look fantastic with our matte black shield.
Driver Modules
Four Motor Power Supply



Big, unenclosed, cage type power supplies can be a hazard.
This enclosed switching power supply delivers 60 watts at 12 volts. It's just the right size to run a four NEMA 17 or NEMA 23 motor CNC setup. To keep from having to mutilate your power cord, a panel mount jack with 6" solid core leads are included. UL and CE certified.
This supply measures 4.5 x 2 x 1 inches.



CNC Mechanical

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Finished, Precision V-Wheel Spacers



The provided "precision" spacers in the ShapeOko kit can be more than 7% over or undersized. This can lead to a mechanical looseness where the bearings, washer, and bolt are all sandwiched tightly together, but the bearings do not fully contact the v-wheel, or, are entirely too tight on the v-wvheel. In our case, the washers were 6 to 7% oversized each, leading the bearings to move back and forth in the delrin wheel. We were seeing 2 millimeter slop at the top of the Z-axis slide. So, we decided to fix it.
With these in place, the Z and X axis motor are now married to the slide rail, making cutting into harder materials much more solid and precise.
Spacers are 0.98 to 1.01 in thickness.
Rough, Precision V-Wheel Spacers



This is a rough spacer blank cut specifically to replace the the provided spacer for the delrin V-wheel setup included with some CNC kits, like the ShapeOko.
Save the cost of us doing the machining by taking it on yourself with these rough blanks. The material is 2 to 3% oversized and is rough cut with some taller burrs and bevels created during machining. The alloy is easy to work. We use a set of files, and some 150 grit to get the right thickness, then clean up the hole with a needle file and the flats are smoothed a bit with a finishing grit. We can get through 4 to 5 per hour. A caliper is recommended.
More detail is under the "finished spacers" listing above.

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