Prometheus Mount for SeeMeCNC Rostock Ball Joint Platform +/- Accelerometer Option

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This is a setup for for mounting the Prometheus hot end on the SeeMeCNC Ball Joint Platform with or without the Accelerometer plate. All models (shaggy as they are...) in 123D Design, including a roll your own size master for the Stand Off, are included. Remember to print a Whip Clip if using an accelerometer. 3 Main Components1 Standoffs ranging from 32mm to 55mm in 1mm increments2 Centre Plate3 Clamp Plates for Accelerometer or non-accelerometer There is also a Cover for the accelerometer clamp plate. Hardware Required: Qty 6 M4 x 16mm Button Head Socket Head Cap Screws to attach platform to bottom of Stand Off and Clamp Plate to top of Stand Off. Additional Hardware for Accelerometer Option: Qty 3 M3 x 6mm Cap Screws to attach cover. Qty 3 M3 x 6mm Male Female Standoffs to attach Accelerometer to Clamp Plate Qty 1 Push to Connect PTC retainer of some sort i.e. Lanyard PTC for 4mm Guest Fitting Cartridge Recommended Tools M4 x 0.7 Tap M3 x 0.5 Tap (accelerometer) 4mm(#21) Drill - to size holes in platform 3.3mm (#30) Drill to clean out holes for tapping the Stand Offs 3mm (#31) Drill to size holes in Cover (accelerometer) 2.3mm (3/32) Drill to clean out holes for tapping the accelerometer Clamp Plate 1/2" half round file for fine tuning holes and slots to fit hot end Stand Off Sizing Decide if you will assemble the platform with the ball joint "barbells" on the bottom or top. Bottom orientation will allow shorter (and presumably stiffer) stand offs for a given amount of protrusion below the axis but will place the fan shrouds closer to the bed surface. For a given nozzle size and zone setup of the Prometheus, decide how much protrusion below the platform you want. Remember to leave enough clearance for the fan shrouds and ball end arms to clear the bed clips!! For the arrangement determined above, measure the distance from the TOP of the platform to the TOP edge of the LOWER groove of the hot-end. This distance (in mm) with be the size of the Stand Off model. Components to Print a Stand Off from the StandOffs_32_55mm.zip file a Centre Plate either Clamp_Plate_71210_Accel or Clamp_Plate and a Cover_Plate_71210_1 if using the accelerometer. Assembly Suggestions Holes are sized a little small so drilling before tapping and assembly is recommended Relieve edges and finish slots in the clamp plates to 12mm and 16mm Fit into hot-end grooves should be snug but ensure hot-end seats fully into Stand Off and Clamp Plate throats and that no more than a gentle squeeze is required to bring the holes into alignment with the the platform Clock the Clamp Plate so that its throat is not aligned with that of the Stand Off in order to maximize stiffness. Note the orientation of the accelerometer board to the Stand Off and Clamp plate in the photos (sorry do not have a proper set of assembly pics) in order to facilitate wiring. The photo with the black and white wires shows arrangement for running the LED wiring. Avoid "pinching" the the pins of the fan connector headers for grip. The heater wires will likely want to run right between them Providing a little (~1cm slack in the heater and thermistor wires will allow disassembly of the hotend without desoldering or removing Bowden tube. Gently feed Bowden tube through centre hole while "opening" (or closing) the accelerometer plate relative to the Clamp Plate like a clam shell. Be sure to seat Bowden tube and insert PTC retainer before mounting accelerometer board