Porter-Cable 4210 & 4212 instruction manual HALF-BLIND Dovetails with Clamping Boards

HALF-BLIND DOVETAILS WITH CLAMPING BOARDS

You can mount your half-blind template that comes with the 4210 and 4212 jigs and the 4211 accessory kit to a board. This method, however, limits your workpiece width capacity to 8".

SETUP

Items needed to setup for the half-blind dovetails:

1.Wood to make the clamping board parts

2.Clamps

3.2" #10 wood screws (2)

4.1/4-20 threaded T-nut

5.1/4-20 x 4" bolt

6.1/4" washer

NOTE: These instructions can be modified for making half- blind dovetails with the through dovetail template and for the miniature dovetail template (See the section “HALF-

BLIND DOVETAILS WITH TAIL BOARDS THICKER THAN 7/8").

Fig. 14A

Step 1 -

Step 2 -

Make a main clamping board 1-1/2" x 3-1/4" x 16". Square all of the sides. Make a mortise through the board and drill pilot holes for #10 wood screws (Fig. 15A).

NOTE: Threaded inserts and #10 flathead machine screws can be used in place of the #10 wood screws.

Make the offset clamping block. Make a counterbore for the threaded T-nut (Fig. 15B).

NOTE: If your pin board is thinner than 3/4", modify the dimension. You may need to use extra washers to prevent the bolt from sticking out.

2-1/4 "

1/2 " 1-1/8 "

2 "	3/8" WIDE MORTISE GOES
	THROUGH BLOCK. MORTISE
	IS CENTERED ON BLOCK.

13-3/4 "

WOOD GRAIN

16 "

Fig. 15A

DRILL PILOT HOLES

FOR #10 WOOD SCREWS

3-1/4 "

1-1/2 "

Fig. 15B

1-1/2 "

WOOD GRAIN

1 "

MAKE THIS DIMENSION THE

THICKNESS OF THE PIN BOARD

THAT IS TO BE DOVETAILED

DRILL A 1/4 " HOLE

THROUGH THE BLOCK

1/2 "

3/4 "

MAKE TWO OF THESE BLOCKS

Fig. 15C

Step 3 - Insert the threaded nut into the offset clamping block (Fig. 15C).

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