![]() ![]() The layers you’ll need to export from Altium are: You can then import those files into the software, the software that controls the milling machine. To get your PCB design from Altium into the software, you’ll need to export Gerber and NC Drill files. How do I get my board from Altium into Bantam Tools Milling Machine Software? For example, for a 1/32" (0.031") tool, make a row of 0.033" holes, with centers spaced 0.016" apart. If you need them, make a row of overlapping holes that are a few thousandths of an inch larger than the tool and overlapping by about half their diameter. Larger values will allow you to use larger tools, which will speed up your milling time. If you’re using polygon fill/a ground plane, set your isolation value to 0.001"-0.002" larger than the largest tool you want to use.Through-holes are not plated, so avoid routing traces to the top side of inaccessible through-hole pins.Vias are not plated (meaning they aren't electrically conductive), so you need to solder a wire or rivet on both sides of the board.10 mil minimum annular ring for Othermil, 6 mil for the Bantam Tools Desktop PCB Milling Machine and Othermill Pro.10 mil minimum trace and space for Othermill, 6 mil for the Bantam Tools Desktop PCB Milling Machine and Othermill Pro.This is required for the Bantam Tools Milling Machine Software to understand the size and shape of the board outline. The Mechanical 1 layer must contain the board outline, drawn with the Line tool.We strongly recommend reading our PCB Design Considerations guide first, but here are some highlights: ![]() Designing PCBs for Bantam Tools Milling Machinesĭesigning for our milling machine is different than designing for a PCB manufacturer. This guide gives you tips on designing PCBs for the milling machine, as well as describes the process of generating Gerber and NC Drill files from Altium, which can then be fabricated on the milling machine. If you use Altium and you’d like to mill circuit boards on your Bantam Tools Milling Machine, you’ve come to the right place. ![]()
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