1/4 in. x 1 in. Carbide Straight Router Bit

A:  Hi Tom, the DR04132 has a ¼” shank.

A:  This bit has 1/4" shank. You can scroll down on the Home Depot website to see the specifications of the bit.

A:  I did and it worked well

A:  Yes, when i'm cutting blind plate edge or hidden dado. Take your time and go in small increments. I use about 1/8 max at a time.

A:  Hi Springer! Yes, this bit can be used to plunge, but it is best to advance the router slightly while plunging, rather than boring directly down at 90 degrees.

A:  They are a true 1/4 inch.

A:  So I've noticed that my cnc cuts weren't always coming out to scale. I put my calipers on these bits, and found them to be smaller than the advertised size (on the cutting end). Where 1/4" is 6.35mm, I've had to set my CAM to 6.30mm tool diameter and that solved alot of issues. Just be sure to put calipers on each tool, because the diameters are all different, even on the same bit. One was even as small as 6.25mm. Hope that helps.

A:  Sir your question is a little unclear to me - in terms of context in this regard. On the one hand if the label on the router bit states it’s got a 1/4” cutter diameter - then that’s the diameter you may count on: 0.25 inches (or diameter of 6.35 mm) +/- a.very small tolerance of about 0.005” ( ~ a gage-makers tolerance +/- 0.013 mm) that’s ~1” long (effective cutter length) Since this was cut from a round carbide shaft that also has to fit into the 1/4” inside diameter collet on the router the cutter-shaft will also be very close to that 0.25 inch diameter size. On the other hand - if you’re planning to use this bit to cut a groove for 1/4” plywood -,you’ll perhaps not be completely satisfied with this size because while the edge of the “1/4 plywood” will fit in this size of groove; it will be roomy fit even if you use yellow (aliphatic) glue to fix it (the 1/4” ply) in the groove. Plywood of this thicknesses may be up to 1/16” thinner than the posted 1/4” expected thickness since that’s what the “mill standard” allows. Hope this helps. Grumpy Joe.

A:  Hi Doug, the DR04108 is a true ¼” diameter bit.

A:  I would think not but it depends on how thick your plywood is and the RPM of your router.