Circuit Board Blanks

Design custom (PCB) circuit boards with these FR1 machinable blanks

Circuit Board Blanks
Price Part Number Dimensions
$9.00 1 sided FR1 circuit board stock 2 in × 3 in (25 pack)
$10.50 1 sided FR1 circuit board stock 4 in × 6 in (25 pack)
$16.00 2 sided FR1 circuit board stock 2 in × 3 in (25 pack)
$23.00 2 sided FR1 circuit board stock 4 in × 6 in (25 pack)

Product Details

These circuit board blanks are made by bonding a thin layer of 1 ounce of copper over one or both sides of the entire substrate. To etch a circuit design into the material, unwanted copper can be removed using a CNC machine, leaving only traces. Free software like Eagle CAD, a vector based 2D program like Inkscape or a 2D raster program like gimp will work for designing circuit patterns to upload to the machine for milling. The circuit can also be drawn on the boards using a chemical mask pen and then chemically etched to remove the unwanted material.

The more commonly available FR-4 boards have a fiber glass, non-conductive layer which wares the bits on the machine very fast and will produce undesirable fiber glass dust during machining. These FR-1 boards are made with a cellulose paper-based material which makes the dust less toxic and the resin binder is soft enough that the bits last much longer.

Here’s a video of the MTM Snap CNC Milling machine cutting out a circuit board.

Technical Data

Thickness

0.062 in

Accessories

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