SpeTool Spiral 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%

Muy bueno, no pierde el filo

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.

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.

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

I used this bit to follow another spiral up cut bit so I could get another 3/4 into my bowl. I followed the original bit a little at a time in with my jig and it was terrible. By the time I got to the bottom the sides were groves vertically. Pretty much ruined the bowl. No I will have to make it even smaller. Thankfully I had not don the middle yet. Bit acts as if it’s very dull. Even 1/16” passes were terrible at all the speeds I tried.

This was much sharper and much more high quality than anticipated for the price. I've used it now to cut several table tops with a router jig and it performed flawlessly.

Bit, worked once with nice cut, broke on second use. Amazon return window closed, but still within Spetool 6 month guarantee. Contacted Spetool and provided all necessary information to get replacement. SpeTool agreed and sent new bit - thank you!. They also said they would talk to Amazon about the guarantee and make it easier to return through them. SpeTool came through and that was great! Highly recommend them!

This is the third product from SpeTool that I have purchased (all CNC bits) and I am sincerely impressed with the value for the price compared to "other" brand names. Sometimes less than half the cost of those brands and for at least two of the three for which I have "other" brands, I see very very little difference.

I bought this bit to cut 1.5" to 2" thick bodies for wooden toy cars. I deliberately dialed back the step-down and feed rate values. The quoted values from Spetool are 2.54 mm 100 in/minute, and I used 1.5 mm and 50 in/minute. This may be a little conservative but I was conscious of the fact that some people had experienced breakage.

I purchased this bit in August 23, 2024. I only used it once and it broke. I still have it, in its broken condition. I wrote them about it but I got no response. The bit was defective to break off that easy. Money down the drain. Not good customer service when I am a customer of Spetool buying several items from them. Not good Spetool.

Work good for the money i spend