1 12

1
Half Ring Clamping Jig
Top View
1 1/2
1 1/2
3/8x16 All-Thread
3/8x16 Fast Thread Knurl Nut
3/8x16 Hex Nut
3
3/8x16 Knurl Nut
1
Retaining Screw
Not to Scale
Ring Halves being Glued
3/4
Sliding Plate with two rubber bumpers
Fast Thread Knurl Nut retaining block, drill thru
11/8 dia.
Rubber bumpers Space at 1 1/2OC to hold
smallest ring (2 dia)
Fixed Block with two rubber bumpers
Side View
Grind notch around all-thread rod for retaining
screw, rod is free to rotate and push/pull
sliding plate.
2x 1/2 Birch Plywood Base Plate
Sliding plate in Wide Dovetail Slot (top piece of
1/2 ply two 45o cuts form dove tail slot)
Dove tail slot
Page 1 of 2
Richard Kuivila, October 2008
2
2
End View
1/2 Birch Plywood
45o
1/2 Birch Plywood
Dovetail
4 Legs - (Makes clearance for spring
clamps) 1/1/2x7/8 dia Birch Dowel with 7/8
rubber crutch tip
Not to Scale
12
Top View
PARTS LIST 2 pcs - 1/2
Birch Plywood, 12x20 1 pc - 3/8-16
All-Thread, 18 1 - 3/8-16 Knurled Check/Lock
Nut, MSC 74213208 1 - 3/8-16 Fast Thread
Knurl Nut, MSC 01602986 1 - 3/8-16 Hex
Nut, 4 - Rubber Lab Stoppers Size1
McMaster-Carr 9545K26 4 - 1/4 dowels (to mount
stoppers) 4 - 1 1/2x 7/8 Dowels (Legs) 4 - 7/8
Rubber Crutch Tips Misc hardwood.plywood for
bumper mount blocks. and knurl nut holder. On
Line www.mscdirect.com www.mcmaster.com
Fixed Dovetail (filler)
20
Sliding Dovetail
Retaining Block
Fixed Dovetail (filler)
Richard Kuivila, October 2008
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