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

Im an experienced woodworker, this bit is not worth the price. In fact the price implies that it is US or European made as the Amazon profile does not disclose it is China made. It broke within the first minute of use. Im sending it back for a refund. Amazon- disclose the country of origin on all products, quit playing games.

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

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

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

Worked while it lasted, it didn`t last very long. 3 uses

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

i took no more than 1/8 of material at a time but it broke on the second pass. i am never buying from these folks again.

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

Works great but gets dull fast