PBJ just confirmed that several prints of v0.03 of the Williams Drop Target Guide (P/N 03-7479 or 3B-7479) are installed and working in his Alien Poker.
- v 0.03 - Narrowed columns, adjusted ramp, adjusted position of wall near ramp, enlarged bottom screw hole 10 Apr 18
- v 0.02 - Changed default screw hole sizes 27 Mar 2018
- v 0.01 - First draft 27 Mar 2018
This SCAD file recreates and remixes the model posted
here on Thingiverse by Haruman's friend.
- Corrections to that part are based on measurements of original parts
- PCB columns changed to ovals for greater strength
- Inspected by PBJ for accuracy and suitability
This part is used in Williams System 3-6 tables.
Planetary Pinball has online copies of Bally and Williams parts catalogs
here.
The Williams 1980 catalog
here contains related parts diagrams.
Drop target assemblies are on pages 113-118 -- they all use the 03-7479 guide.
The D-8362 assembly diagram on page 116 shows PCB screws that are the same P/N as the horseshoe screws. (4104-1001-06)
Drop target assemblies that use the 03-7479 guide:
D-7931-#s - # = number of targets (between 1 and 5)
D-8362 - 5 targets
D-8442 - 3 targets
D-9355 - 3 targets
Screw sizes:
- #6-32 x 3/4" machine screw
- #4 sheet metal screw
The attached .ZIP file contains the .SCAD file (you can modify the part using
OpenSCAD) and .STL file.
Print with supports and your choice of filament -- the ones I sent to PBJ are Hatchbox PLA.
Scott