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

I have never used a bit this long before. I was having some problems controlling it. I suspect control would come with time.

This tool is a great way to get your idea onto a piece of wood and make it look great.

I needed something with some length so I can use with my router and templates and this works great

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.

Managed to cut out 21 pieces for a custom order of corbels. Had to do conservative cuts due to the length of the bit but was able to complete all the cuts with just one bit. 33 in/min, 18k spindle speed, .125 depth of cut.

Use in my cnc for 1.5 inch pine and while cutting multiple passes all stayed aligned.

I have used two and broke two of these. Total time on bit one was 15 minutes, bit 2 lasted only 8 inches. These were used at a very slow feed rate. I will not buy another one of these bits. I needed the long length but unfortunately the bits did not survive.

Went to make a test cut on a half inch thick piece of wood and the bit snapped within 30 seconds.

Quick tip: There is No 1/4 bit at a 2 cutting depth should be taken full-pass, unless its foam. Pretty much any bit at that side-load will stress and break at full depth. Easy pass depths and slow feed rates are the only hope. I consider this a specialty bit when working on deeper materials, just for the reach- never full depth. For XPS Foam (80% air), works great!

Bought this bit for my circle jig and it did not last at all. Got about half ways of a circle (17”) and it snapped.