Review on 🔪 MIBRO Adjustable Circle Cutter: Simplifying Precision Cutting Effortlessly by Mark Greenwood

I used these with little difficulty, albeit SLOWLY, to cut a hole in the plastic cover of my PC's PSU so I could have one fan sized round opening, cover with a grill/mesh and use an intake fan on the bottom of the case to force more air into the case. As another reviewer noted, who also cuts through plastic, you might get lucky running him backwards as he wants to burrow and catch more as he moves forward (clockwise). In my case, I moved it forward until it started slicing (and grabbing), then moved it back to hit pretty deep, moved it forward a little, then back, and so on until it was done. Moving backward helps clear the path you're carving after the forward movement has jammed and left a "bulge" in the track. with some oil) also on sheet metal. But cutting thicker material will probably require a drill press, in which case it's better to use the two-blade version. I don't think the dual bladed version will work well without a drill as you will have two drills trying to dig in and catch instead of controlling one. I had no choice but to use this single-edged tool. , anyway, because the L-shape of what I was cutting prohibited the use of circle cutters with a crossbar longer than about 6 inches; I couldn't find a dual blade version to cut my 5.5 inch hole that didn't have a longer shank. (And no, I couldn't really flip it and cut it on the outside so the L-corner didn't get in the way, as any slip on that side would ruin the finish; I didn't care if it was scratched at the bottom). The front also has deep ribs, making it impractical to draw and start cutting anyway. You just need to measure and draw your circle first, then manually set this tool to about that size by guessing, then see if it's close, improve it, then retest and tweak again until it's right, THEN start with the cutting. Pictured is my mini project. The hole that was cut is just as it is; I didn't have to sand it or do anything else.