These elegant shoulder planes are vital tools for trimming and improving cut joints, particularly shoulders, rabbets, tenons, and grooves.
The Bronze lever cap is higher for better grip and closer to the blade bevel for better support. The mouth geometry allows for better chip clearance, while the adjustable mouth and locking screws are large and convenient. The mouth adjustment screw is captured in the front shoe and threaded into the body so it adjusts the mouth both when turned in and turned out. The captive-nut blade adjustment is very positive.
Bodies are cast from Ductile Iron, precisely ground flat and square - an essential feature for a shoulder plane. Blades are A2 Tool Steel, hardened to Rockwell 60-62, cryogenically treated and double tempered to hold a very fine edge for a long time. Blades are bedded at 18 °, beveled at 25 °, and .005" wider than the body to ensure crisp, 90 ° cuts.
Small Shoulder Plane
This is the smallest of the Preston style shoulder planes, 5/8" wide, 5 3/4" long. The blade is .140" thick, and the tool weighs 1.35 lbs. With an adjustable mouth like its larger siblings, this tool is just right for trimming and fitting small tenons, dadoes and rabbets.
Medium Shoulder Plane
About half the width and weight of the Large Shoulder Plane, the medium size is well suited for lighter work. Excellent size for furniture joinery. Body is 7 ¾" long x ¾" wide. Blade is ¾" x .140" thick. Weight 2.35 lbs.
Large Shoulder Plane
A versatile, general purpose Shoulder Plane with nice heft. This is the best size to start with. Body is 8 ¼" long x 1 ¼" wide. Blade is 1 ¼" wide x .140" thick. Weight 4 lbs.