Clay, Application to Refinement

 

home   content   tools   angle bracket   adjustment knob   Adjustment knob2  links

 

Angle Head

The angle head is the horizontal platform that accompanies the angle bracket and gives it extra versatility by means of being able to scribe horizontal lines in any set position.

 

Angle head construction.

To construct the angle head, 3/4" plywood needs to be cut to the following sizes.

 

1 off 6"x 5 1/2"x 3/4"

1 off 6"x 4"x 3/4"

2 off 4 1/2"x 3 3/4"x 3/4"

 

The first operation is to drill the hole for the adjustment knob, mark-out the 6"x 4"x 3/4" by scribing a line 1 1/2" from the top, then scribe a center line 3" in from the edge. At the center, drill a 7/16" hole.

 

With the 6"x 5 1/2"x 3/4" piece of plywood representing the main platform, glue the 6"x 4"x 3/4" plywood on end to the main platform, creating a right angle block. Make sure the hole on the end board is nearest to the main platform. Check for squareness with a combination square and allow the glue to set.

 

With the two pieces of plywood 4 1/2"x 3 3/4"x 3/4", mark-out the web shape that will support the right angle platform. This shape can be just a right angle triangle or a shape that is more ornate. This choice is entirely up to the individual.

 

Cut the shape out on a bandsaw and sand any rough edges smooth using a spindle sander, disc sander or a file and sanding blocks. 

 

Take the angle supports and glue them into the ends of the right angle platform. Allow the glue to set, then drill and countersink two holes per-side and secure the angle supports with 1 1/4" dry wall screws. This is an added precaution for keeping the angle head square.

 

The end result at this stage should look like the photograph above.

 

Base of angle head showing the guides and T-Nut in place.

Now that the main angle head is complete we need to make and attach the hardwood guides.

 

2 off 4 3/4"x 7/16"x 1/4"

 

The guides can be made from hardwoods such as oak, maple or beech. These woods are hard enough to prevent wear during normal operation of the angle bracket.

 

I purchased a 24"x 2"x 1" piece of oak from Home Depot. The actual finish sizes were 24"x 1 3/4"x 3/4".

 

Set-up the table saw fence 1/4" from the blade and cut a strip of wood 24"long from the 2"x 1" oak. Next set-up the table saw fence 7/16" from the blade and reduce the width of the 1/4" strip to 7/16". This will give you the overall sizes for the hardwood guides. Cut off two pieces 4 3/4" long. Test fit into the slots on the angle bracket, sand if need be.

 

An alternative to using hardwood is to cut the strips from 1/4" plywood instead. 

 

On the back face of the angle head mark a vertical line 3/4" in from the edge, on both sides. This represents the outside edge of the slot on the angle bracket. Smear a small amount of wood glue on the back of the hardwood guides and position on the back face of the angle head, position against the vertical line. 

 

By laying the angle bracket on its side you can check the position of the hardwood guides by sliding the angle head up to the angle bracket. Carefully slot the guides partially into position and allow the glue to set.

Once the glue has cured, drill and countersink the hardwood guides for No.4 x 1/2" wood screws. Secure the guides with the screws.

 

With the angle head complete, sand all faces smooth and remove any excess wood glue, especially from the guides as this could prevent the angle head from operating properly. The excess glue could prevent the angle head from clamping square to the angle bracket and also have a less than smooth up and down motion. Apply paste wax to the back of the angle head and along the length of the guides and polish out. This will ensure smooth operation. The angle head with hardwood guides is shown by the photograph above.

 

The last part to complete the angle bracket, is the Adjustment Knob, this secures the angle head in place.

 

Angle Head PDF     To make the angle head, download the technical illustration.

 

 

Copyright © 2004 - 16 Steven Austin

Top