SpeTool Extra Long CNC Spiral Router Bits with Up Cut 1/8 inch Cutting Diameter, 1/4 inch Shank 3 inch Extra Long HRC55 Solid Carbide End Mill for Wood Cut, Carving

this bit has worked very well so fare

I use this for cutting inlays in hard maple and walnut. Worked great.

Work great cutting 1 inch wood on my cnc

Im glad I went with the extra-long bit. The bit that comes with the inlay kit works well but limits you to 1/4 temples and limits your inlay depth. The longer bit allows you to use 1/2 thick templates and still cut a 1/4 deep inlay. 1/4 template allows you to get 3/4 inlays.

I dont know what these reviews are about having issues with this bit. Ive been using them cutting intricate dovetails on cnc with both vertical and horizontal orientation on my cnc through 4/4 milled exotic hardwood. I obviously need this size bit to handle that. Now I go slow and take about 8 to 10 passes over that stock, but it works wonderfully. Im on my 3rd bit, because Id say I average about 4 dovetail boxes a week, over 6 months. My first bit is rough, but hasnt broke, and I still use it for roughing or test pieces cuts, and my newest one for the higher exotic exotics. So it cant be that I got lucky with a good lot of bits since Ive ordered more over time. Only thing that makes sense to me and from what I see from other reviews is they dont understand feeds, speeds, and depth per cut. Simple if you understand tha you wont have problems

Sometimes you need to cut thicker wood. This bit helps with that task. I don’t know about the longevity yet.

I used this but in a two stage carving. It worked very well in the roughing stage and then followed by a 60° v-bit for the rest of the details. I highly recommend.

In middle of cut with cnc in hard wood the bit broke where it makes the transition from 1/4 to 1/16

While this long shank might get you a deeper cut in some places, the 1/8 cutting portion is only 1 inch long, widens right out. So dont expect to get deep into corners/along sides because youve only got a 1 inch cut depth before the shank hits the upper wall of the material, prevents you from going deeper on the edge.

After three uses this bit broke in half. I was using it on a routine cut and it broke in half. I am not satisfied with this bit