Jamb Saws
Jamb saws and undercut saws trim the bottom of door jambs, casings and baseboards so new flooring slides underneath. Shop Roberts and Crain saws and their replacement parts.
Frequently asked questions
See all FAQsWhat is a jamb saw used for when installing new flooring?
A jamb saw trims the bottom of door jambs, casings and baseboards so the new flooring can slide underneath for a clean finish. The Roberts Super Six cuts door jambs, baseboards, cabinet toe kicks, inside corners and most hanging doors. Its blade height adjusts from flush to 1-1/16" above the floor to match the thickness of your flooring.
Can I undercut a door without taking it off its hinges?
Yes, if the saw is made to undercut doors in place. The Roberts Longneck Plus (1100 W) undercuts doors up to 1-3/4" thick without taking them off and has a 1-1/2" vacuum port for dust. The Crain 835 heavy-duty undercut saw (13 A) undercuts doors in place up to 1-5/8" thick, with height adjustment from flush to 1" above the floor.
Can a jamb saw cut through tile, stone or masonry?
Some can, with the right blade. The Roberts Longneck Plus comes with a masonry blade that cuts brick and cement block. The Crain 835 undercuts masonry walls and hearths, and its No. 822 diamond blade, sold separately, cuts tile and stone. To cut tile or grout under cabinets, the Crain 777 toe-kick saw takes the No. 789 diamond blade (sold separately) and cuts to a depth of 3/8". You'll find replacement blades in jamb saw blades and undercut accessories.
Is there a hand saw for undercutting door jambs?
Yes. The Crain 336 undercut saw is a hand saw with a heavy-duty wood handle and a replaceable 12" high-carbon steel blade with 10-point teeth on both sides. A front knob lets you push with both hands. It is made for wood door jambs, and the replacement blade is No. 335.
Where can I find replacement parts for my jamb saw?
FloorBox carries parts for Roberts and Crain saws, such as the replacement switch and carbon brushes for the Roberts 10-46 Super Six, a blade clamp for the Roberts 10-56 Longneck Plus, the Crain No. 837 dust cover for No. 825 and No. 835 saws, and a brush set for the Crain No. 575. If you can't find your part, contact us with your saw model.
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