Domestic shop
If you prefer navigating a gridded storefront, see our newly opened, increasingly pretty Storenvy shop.
Or, head over to the International Shop.

Aisles in the Shop

• CNC Technical
• CNC Mechanical

Shipping lead time is generally two weekends.

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

Raw Boards
$11.99 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 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--

Single (1) Power Supply w/ jack - 36 Watt; Three NEMA 17 motors $19.07 USD Two (2) Power Supplies w/ jack - 36 Watt; Three NEMA 17 motors $37.59 USD Three (3) Power Supplies w/ jack - 36 Watt; Three NEMA 17 motors $55.21 USD 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
Three (3) Pack of A4988 Boards with Heat Sinks $29.37 USD Four (4) Pack of A4988 Boards with Heat Sinks $38.96 USD 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 Packages: Black Edition: three drivers minimum needed to complete the board solution

Three (3) Pack of A4988 Black Edition Boards with Heat Sinks $35.22 USD Four (4) Pack of A4988 Black Edition Boards with Heat Sinks $46.15 USD Single (1) Pack of A4988 Black Edition Boards with Heat Sink $11.90 USD 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.

Four Motor Power Supply

Single (1) Power Supply w/ jack - 60 Watt, Four NEMA 17/23 motor $25.42 USD Two (2) Power Supplies w/ jack - 60 Watt, Four NEMA 17/23 motor $49.00 USD Three (3) Power Supplies w/ jack - 60 Watt, Four NEMA 17/2 motr $71.89 USD 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.

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CNC Mechanical

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Finished, Precision V-Wheel Spacers

Half Set (08) Actually Precision V-Wheel Spacer - Fully finished $54.84 USD Full Set (16) Actually Precision V-Wheel Spacer - Fully finished $99.56 USD 3/4 Set (12) Actually Precision V-Wheel Spacer - Fully finished $80.13 USD 1/4 Set (04) Actually Precision V-Wheel Spacer - Fully finished $29.40 USD Single (01) Actually Precision V-Wheel Spacer - Fully finished $7.35 USD 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

Half Set (08) Actually Precision V-Wheel Spacer - Rough finished $4.09 USD Full Set (16) Actually Precision V-Wheel Spacer - Rough finished $7.69 USD Pair Set (02) Actually Precision V-Wheel Spacer - Rough finished $1.25 USD 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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