Decap tray for RCS reloading press
by lcecil, published
Replacement for the inverted "Y" tray on RCBS Rock Chucker Supreme reloading press. (Updated5/18 to improve support removal.)
Fits behind the ram, retained by a lug in the frame slot and slotted ring around ram. Remove shellholder before installing or removing the tray. Select preferred version for a hose that goes on either the left side or right side of the frame, then down to a small bottle or plastic jug to hold the spent primers and black debris.
Default version prints upright from STL files with support and 4mm brim in ABS or PLA.
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Due to the nozzle bore, you will need to use support, but it can be 4mm or 5mm spacing. It simply rams out of the tube with a large hex key. Use handheld 3/8" twist drill to smooth the bore. Hose is 4 or 5 feet of 1/2" or 13mm ID clear vinyl flex tubing available from local hardware store.
Bed temperature may need to be 10C above normal, to reduce warping of ABS. Source files include a"wHS" option "with Heat Shield" to keep the piece flat on the build tray for ABS, especially if your print table is small or slightly cold. shield pieces trim off after the print cools.
Print anywhere in the 0.25 to 0.35 mm layer height, ABS or PLA, with 0.3 rectilinear or 0.2 honeycomb fill, at least 3 perimeters and 4 top and bottom layers.
A spent 22 cal case is perfect for the hole in the right leg, to pin it to the press frame, but is not usually necessary. Universal decap dies let the metal pieces drop gently and will sometimes clog 3 or 4 primers, then drop as a group. You can see each primer drop down the clear plastic tube.