Whiteside RU2100 Spiral Upcut Straight Router Bit: 1/4 Inch Cutting Diameter, 1/4 Inch Shank, 1 Inch Cutting Length

These cut like a champ. Nice clean cuts. Do not cut with the veneer up. You won't be happy. Just saying. Up-cut bit have their purpose and do s great job. Whiteside does it best.

Can't go wrong with Whiteside router bits. Cuts really well and good quality

Whiteside router bits are absolutely of the best quality and made in the USA by a small business.

This 1/4 inch plunge bit held up really well to cutting through red oak in 1/4" deep passes. It stayed pretty sharp for most of the time that I was using it to make some vents. I ended up cutting about 84 feet of 1/4"x1/4" grooves and it didn't burn the oak or create tearout the entire time.

I just want to mention that this bit is only 2-1/2” end to end, so if you’re intending to use it with a Porter-Cable style guide bushing in a mortise routing jig, you’re never going to get the full one-inch (1”) depth of cut. The collet will hit the retaining ring of the guide bushing at about 3/4 ” plunge depth. The P-C guide bushing is roughly 1/2” deep, the retaining ring is about 1/4”, the router base is 1/4” thick, and you need at least 1/2” inside the collet to safely use the bit. You get sparks from the metal-on-metal contact from the router collet hitting the retaining ring of the bushing before you get to a full one-inch plunge depth. This bit should have been at least half an inch longer (i.e. 3” long) to be usable in this configuration. The bit itself cuts fine if you’re using it some other way. Other manufacturers’ bits are 3” long and do not present a similar problem.

I cut finger joints with my shaper origin with dense wood without problems.

Old time user.

I had to laugh - I'll use this mostly in a handheld router, but used it in my router table this time. An upcut bit is a down cut bit when used in a router table. Of course, it made beautiful cuts (cutting slots for T-bolts in a jig I was making). Very happy.