Installing, Using the PCB Probing System Datasheet by Bantam Tools

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Installing and Using the PCB Probing System
This tutorial will show you how to use the PCB Probing System. The PCB Probing System
allows for quick and precise measurement of the thickness of PCB material that is
already installed in the machine. When milling fine traces with small tools, getting the depth
correct is critical. This system removes some of the variables that can effect the depth of cut. To
purchase the PCB Probing System, visit our store.
Tools, Materials, and Files
Materials Included in PCB Probing System:
The PCB Probing System can be installed in any of the three threaded holes at the front of
the spoil board that are used for attaching the alignment bracket. It can be installed with or
without the alignment bracket present. It can also be installed in the same three locations on the
T-Slot Bed or in the FR-4 Milling System.
The PCB Probing Clip is secured using the PCB Probing Clip Bolt. Unlike a normal bolt, it has a
cylindrical shoulder between the threaded portion and the head. The hole in the clip should rest
around the shoulder and float freely under the head. The clip should not be clamped in place
when the bolt is tightened.
It can be helpful to move the Y Carriage to a position that allows for the Probing Clip to hang
below the surface of the spoil board when installing it.
During normal operation, stow the Probing Clip on top of the Alignment Bracket or along the
side of the spoil board, out of the way of your material and the toolpaths that will mill it.
Probing Material Thickness
Bantam Tools Desktop PCB Milling Machine Software supports Material Thickness Probing. In
Version 1.2, The feature is located in the BitBreaker menu. This feature will walk you through
placing the Probing Clip on the material, probing the material, and returning the Probing Clip to
its resting position.
When prompted, simply lift the end of the Probing Clip and swing it over your material. Place
the end of the Probing Clip so it is in direct contact with your material.
The clip works by electrically connecting the PCB material with the bed.
When the probing is complete, always remember to move the clip back to the resting position off
of the material so your cutting tool does not collide with it.
Notes on Functionality
The Material Thickness probing function was designed for PCB stock but will work with any
thin, electrically conductive material.
Always make sure the clip is in place before starting the probe sequence. If an electrical
connection between the material and bed is not made, the tool may plunge too far and cause
damage to the tool and material
Always move the clip off of the material before beginning a milling job. If the clip is left in
place, the cutting tool may collide with it.
When locating the alignment bracket, the bracket edge is probed just to the left of the center
mounting bolt. If the clip is installed in the center mounting hole, leave the clip resting to the
right of the hole to avoid interfering with the bracket locating process.

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