Custom CNC manufacturing for short run projects

A customer needed a machined shim was to fit between a stamped metal plate and the side of  a melamine desk.  The customer supplied the dimensions of the metal plate in DXF format, and a plastic shim was created to the exact size required.  Note the recesses near the holes – this allows the shim to sit flush where the metal plate protrudes.

custom parts made to order using CNC technology
Custom Parts Fabrication

Drill head logic controller for 8-spindle drill head on a ShopBot CNC

The new ShopBot CNC machine at came with an 8 spindle drill head on a second Z-axis.  The motor turns all 8 spindles all the time, and the individual spindles are extended using air pressure.  Each spindle can be individually extended or retracted when 24 volts is applied to any combination of the pneumatic solenoid valves.

The ShopBot controller can operate the solenoid valves, but there are not enough outputs available to address each spindle individually.

The four analog outputs from the ShopBot controller are being used to pass a binary number) from the design software to the Logic Controller.  The Logic Controller takes the number and decodes it into one of 16 analogue signals using a SparkFun Digital/Analog MUX.  Each of the sixteen analogue outputs break out into a pattern of drills extending, so output 3 might translate to “extend drills 1,3 and 5”.  Diodes are used to keep the signals from one drilling pattern activating other drills through common wires.  The signals activate 24 vdc relays which in turn activate the solenoids to extend the drills.

A logic controller for an 8-head drill head on a ShopBot CNC.

Engraving in Brass

This dedication plate was affixed to a new Cross on the steeple of Our Lady of the Miraculous Medal church in Russell, ON.  Unlike trophy plates where the engraving process removes a colour coating on the metal, this plate was solid brass and will be exposed to the elements.  In 50 years it will have a beautiful weathered patina but still be very legible.

engraved brass
Deep rotary engraving in brass