Standard design constraints are as follows:
Pricing is based on the smallest rectangle your design can be fit in without rotating it. For example, the L-shaped board shown below would be charged based on the dimensions of it's total length and width (4.2cm by 3.5cm).
The Bottom Silkscreen is optional but there is no extra cost to include it. Please export the gerbers with units of "Inches" and with format of 2:4 or 2:5. Also, it's important that you export with no zero-suppression (ie keeping both leading and trailing zeros).
The board outline should be a single continuous trace. The center of this line will be the edge of the board when it is manufactured.
We also require a file describing the drills in "Excellon" or "NC Drills" format.
Please export with units of "Inches" and with format of 2:4 or 2:5.
Also, it's important that you export with no zero-suppression (ie keeping both
leading and trailing zeros).