SpeToolSpiral Router Bits with UpCut 4 inch Extra Long1/4 inch Cutting Diameter 2 inch Cutting Length CNC Router Bit Carving Tool

Needed this to cut multi later birch plywood 1.5" thick. Just went down in 1/4" steps and it cut fine. Because of its long length just go slower than you usually would with a short bit . Longer bits tend to break if you apply too much force. Great bit for the price and cut better than I expected very clean edges.

I use this bit to cut three cutting boards out of inch and a half thick butcher block material. I had no issues with the bit on any of it and no breakage. As long as you're not a total idiot, the bit works fine. Take it slow and steady. It makes a nice cut with no issues at all. Worth the money 100%

Needed to create several 2" deep, 1/4" wide dados and thought this bit would do the job. Because this bit is so long I was concerned that the bit would be prone to breaking as some have reported. I tried a 1/4" deep pass (typical for shorter bits) but the chatter was too great. I reduce the cutting depth to 1/8" and chattering was still unacceptable and the dado cut was not clean. I finally decided, using 1/8" depth of cut to do a series of multiple plunges (ie used the bit like a drill bit) across the length of the dado (roughly every 1/4'). This serves to hog out a lot of the material but puts no lateral stress on the bit. I then came back after the drill cuts and used the bit normally to remove the rest of the material. There was little to no chatter at this point as much of the wood had already been removed. It was slow and tedious but the resulting dados were flawless.

This has held up well for about a year. Hope it keeps up the good work.

I bought two of these. Sure first one broke and the second one was incompatible with my CNC router.

I only use this HDMI extender cable for audio but it works perfectly.

Worked great on the 1 1/2 inch mdf. Got the done.After the job the operator tried it on some 1 1/2 inch oak with out changing speed/feed. He got 2 of the 6 3/4" thru holes before the bit snapped.

shattered x 3 of these in soft cedar. I don't know if there is a better equivalent of these available but I do know these are way too expensive to keep shattering in soft wood.