Williams & Hussey
Toll Free: 800-258-1380
13
CONSTANT RADIUS MOLDING
The molder has the capabilities to cut constant radius molding. A constant radius means the
radius does not change. A changing radius will require the EJ-92 Elliptical Jig.
When molding constant or changing radius profiles the deep cut of the profile normally is on the
open side of the molder. Using of the tube side will limit the radius. Our in stock and custom
knives are manufactured with the deep cut on the open side of the molder. TIP: When ordering
custom knives specify deep cut location.
STOCK & TEMPLATE PREPARATION
This is one example of how to make a radius template and radius stock.
First determine the angle needed to cut the wood sections in order to stay within the selected
radius. Lay out the wood sections by marking the angles while being careful to select cuts for
grain structure and color. Cut the sections and biscuit join them together with glue.
Make a fixture to band saw the inside and outside radii consisting of a pivot bar and bracket.
Mount the pivot bar to the stock on the scrap portion of the inside radius. The pivot bar is drilled
with numerous holes to accommodate various radius sizes. Make sure the outside radius is cut
first.
Make the guides to 20” long using the GS-2-1 guide system. The guides may be made using the
band saw set up. Make one guide for the inside radius and one for the outside radius.
SET UP
1.
Disconnect power source.
2.
Attach the knives.
3.
Raise molder head and set the stock on the sub plate.
4.
Align the stock with the molding profile.
5.
Lower the head to pinch the stock.
6.
Set the guides and lock in place.
7.
Raise the molder head, remove the stock, and reset the
head to within 3/16” of stock thickness.
8.
Check knife area for clearance.
9.
Attach the chip extractor with the axis pin.
10.
Power up and feed stock.
CAUTION: DO NOT ATTEMPT CLOSED LOOP MOLDING
This can cause knife breakage.
CHANGING RADIUS SET UP
Curved Guides & Stock Example
