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

I used this cutter to resurface the top of the roughly 24" x 30" MDF wasteboard on my Shapeoko Pro XXL and it left a nice smooth finish. I ran it at .020 depth of cut, 16000 RPM, 155 IPM feed, 40% stepover. The picture/video show it at about the 80% point. My cut started at the middle of the board and worked its way out. I suspect the IPM could be pushed up to 200 IPM at this same RPM. I'll try that next time.

I will be honest, this was my first wood cutting bits with inserts. I thought it would be more economical as the Chinese surfacing bits with brazed carbide cutting tips didn't last long when cutting hard woods but now I am not so sure. I thought I'd take light cuts (.25 mm) to get the feel of the new bit but the tool chattered and gouged the workpiece. I thought maybe I needed to take deeper cuts so I tried taking a 1 mm cut on a piece of dark cherry. Not but a few minutes into the cut on my 3018 CNC router the tool chattered so bad it knocked my dust boot off, shattering it and sending pieces sailing across the room.Since losing my dust boot I have not used my router or this bit so I can't say much other than I wished I'd purchased a half dozen 1 inch surfacing bits from China instead of this bit with interchangeable inserts. Bad thing was I bought a box of inserts when I bought the bit.If I happen to find out I was not using his bit correctly in will update this review. As a retired machinist I am very familiar with metal cutters with replaceable inserts and thought I wouldn't have any problems. I ran the tool at high rpm and a low feed rate, maybe someone can tell me if I am doing something wrong?After upgrading to an 800w spindle motor the but no longer chatters and leaves a good surface finish so I raised my review from 3 to 5 stars.

Exactly as expected given the price. For light use this is a great tool if used properly. The build quality isn't great and the included tool was a loose fit but it still retains its functionality. Where this review differs is in an unexpected use. In the market of high speed hobby type cnc routers such as the X-carve by inventables, there are few tools for cutting aluminum successfully (let alone facing operations). The closest tool available for facing aluminum on a high speed spindle off the shelf would be the Datron stepped two flute cutter which is upwards of $100. With a few slight and easy modifications this tool can mimic the job done by real face or fly cutters that are 4 times its price in aluminum. This absolutely should not be done without proper consideration for personal safety but the lack of literature on the subject is reason enough for me to point out this possibility. I would have no problem using this as intended in woods and manufactured wood products like mdf. *A couple safety precautions for this kind of tool*1. Acquire and use personal protective equipment ie. safety glasses and/or an enclosure on a hobby cnc2. Before each use check both insert mounting bolts for tightness and ensure both inserts are firmly held into their recess. This eliminates the issue of loosening inserts mid op.

Bought this to do very demanding work on guitars. The replaceable carbide cutters are a great feature!

the product works as expected