CNC Spoilboard Surfacing Router Bit, 1/4" Shank 1-1/2" Cutting Diameter, Carbide Insert Slab Flattening Router Bits Planing Bit Wood Planer Bit Woodworking Tools by BINSTAK

Naturally when you’ve been machining for 10 years you think you know better than others, I read the reviews and thought they were just amateurs with the wrong speeds and feeds. So over the period of my use of the surface bit I started way way easy and slowly picked up doc and feeds. Today after running it at these speeds for a few projects and grabbing just flipped the edges of the inserts a few jobs back the tool bent over. I can now say for sure they are garbage and not worth the money. I’m so disappointed because the return windows just closed.

Needed to surface my waste board. I had an older bit I had used once. It did a terrible job. Once I shaped them out with the new bit. It was a night and day difference.

The bit worked great, right until it warped. I have an older craftsman router and the bit would only go in the collet until about 3-4 mm of the shaft below the "insert in router to the line" line was still sticking out . I figured that would be sufficient if I was careful with the amount of pressure I put on the bit. I was wrong. It worked better than any other router I've used, right up until I pushed it too fast (was working with a small oak slab, so that did not help). The shaft warped a bit and developed a distinct vibration, becoming unsafe. I put it in a modern trim router where I could get it to the "insert in router to the line" line and tightening it. The vibration went away, but the bit was then too short to do what I needed. So, if you have an old Craftsman An likely other brands), this bit is not for you. A slightly shorter shank would make this bit MUCH better.

We bought this tool to surface wood slabs and it does a awesome job! the cutters are replacable making the tool last you forever if you just buy new cutters.

This product did not last very long it bent almost immediately after installing it and running it for a few hours. {Update) The company offered a refund for the product. this product might work better with a deeper collet.

I thought this would be a good surfacing bit for my router sled. I made one pass and the blade cracked and chipped .. Do not buy this product

I'm making a small table from a piece of pine. Made a router sled and with this bit it was a quick and easy job.

It didn't take a long time to find out it is not for the end grain flattening.