CNC Spoilboard Surfacing Router Bits, 1/4 inch Shank 1 inch Cutting Diameter, Slab Flattening Router Bit Planing Bit Wood Planing Bit Dado Planer Bit by BINSTAK (Carbide)

Used with my DeWalt mini finishing router. Works well.

I absolutely love this product. Being relatively new to the world of routers and especially surfacing, I was not quite sure what to expect. After looking long and hard at many other products, reviews and comparisons I landed on this one and couldn’t be happier. My application was a simple resurface of a 12x24 cutting board. There were some pretty nasty gouges in the cutting surface but after making one pass with this bit set at 1/16th of an inch…looks as good as new! The only reason I gave 3 stars on longevity is simply because I have only used it once.

Bought this to surface my spoil board. So far its performed excellent. Especially once my cnc was trammed in.

I had a large sizable slab of live edge white oak about 9 long and 2.5 feet wide with a bow and twists in multiple areas. White oak is a heavy and hard wood. Its even harder than American Walnut so I was right to be a little skeptical on this bits effectiveness. I started on the bottom side of the slab since that was flatter and I figured once I got one side flat, it would make it easier to flatten the other side. I made a sled for the router to rest on, found the highest point on the slab, hooked up the dust collector to my router and got started. This little, bitty bit did not disappoint. I was able to complete one side in about an hour even after shaving off only a little at a time. The blade stayed sharp the entire time (altho I would probably sharpen it before using it again). Needless to say, Im very impressed with it. It also came with a 1/2 to 1/4 collet. I didnt need to use it but since I didnt have one, it was a nice bonus.

I bought a little piece of ash so I could learn how to turn a slab into a table. Initially I thought I could use an electric planer on it, but after finding out it was too bumpy, I purchased this bit for my router. I made a frame with rails to put a sled on, then put my router in the sled and moved it across the wood to flatten it. Bit worked great. I sanded a bunch after using the router, but I couldnt have made this table without this bit!

The cutting edge on this bit was brning wood almost immediately. About 1 minute into surfacing I was getting little charred marked here and there and the tell-tale smell of smoke.

Use this to level my spoilboard on a Longmill Mk2, works great. With the head trammed, no visible marks on my MDF spoilboard. Only caveat is there were fuzzies left behind on the outer perimeter with a .5mm depth of cut @ 1500mm/min. I am very new to this so it could be used error but could also be sharpness if the bit. Couldve spent more on potentially a better bit but for the money, I am happy with this. Also levelled a slab of walnut with this bit and had no fuzz but had step over beyond the perimeter of the cut. All in all I would say I would purchase this bit again. 1.5 month update: Have been using this bit more to flatten reclaimed hardwoods and pine slabs. Its been working excellent so long as I make sure to cut outside the slab on the final pass. I messed up big-time in a hurry and collided with one of my aluminum hold-downs. Took 1/8 off the top before I hit the e-stop and shut it down. Have surfaced a few pieces since and its still milling strong. No marks/ lines after a cut. Maybe I got lucky but I will grab another one of these when this one is done being abused by this novice.

I just bought the $60 bit. Still feels pricey but comes with tons of replaceable blade heads. This one wasnt bad, but it wore out after 1 single side. Wasnt great to begin with, but for $20 what did I expect. I feel like its actually only worth about $5 but Ive gotten used to overpaying the past couple years. It started burning quickly, I tried to sharpen it with a bench grinder but just messed it up further so its trash now. I think if you did like 1/16 of an inch per pass it could work, but then whats the point in having such deep cutter heads, and that would turn some 2 hr jobs into 10 hr jobs. Was gonna give 3 stars but then the fact it was $20 vs $10 made me switch to 2

So far, I’ve only used this bit for “surface flattening” with my router and sled setup. With that said, it’s done a pretty decent job for the price. When I first got this bit, I took passes pretty slow to be safe, but now that I have the hang of it, I can cruise through rough sawn boards relatively quick (depending on the size). The only think I’ve noticed is the edges are pealing off, which caused some extra lines in the flattening process, but nothing too major a sander can’t fix. See picture for what I mean by edges pealing, granted I’ve already trimmed off the excess that was making the extra lines.

Cuts wood like butter! And unlike some other reviewers, ive had no issues with the blade dulling over time. Then again, ive only cut wood so far. Still, its worth it for the money.