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It did a good job but by the end it was almost burning the edges of the lath. I used this to cut a hole in lath and plaster. It made enough holes for about 6-8 normal electrical boxes. Not that durable but good enough. Unfortunately the bit was pretty much toast after that.
I ran this against the edge of the wall to remove excess plywood, and it was a breeze. Couldn't think of any other tool that can do it easier. Trace the area to cut, and got it done in about 15 min. I called this the wood eraser. I couldn't do that with a jigsaw because it was right against wall in the corner.I also had to cut a circle for a hood vent. Will buy another for backup.It does kick back a little, but you get used to it and use a little more strength to stabilize it. The original was rectangular.
I also used the dust extractor adapter - What a charm ABSOLUTELY NO DUST. I used this to route a trough up my wall to conceal speak wire to my home theater speakers. It worked like a charm. If you have a Rotozip and a dust problem you need the dust extractor. My house is 1955 with plaster/mortar walls.
I bought this bit at home depot for $8 and used it to cut 4 sheets of hardebacker board into a circle for an outdoor mosaic table substrate, using a 3 1/4 hp router and trammel arm. Perhaps the folks who don't like this bit should retry it in a router. The bit worked quite well, athough I noticed I had to get the RPMs up on the variable speed router to get it to cut easily. I doubt using this bit in a lower powered roto zip could've produced the same results.
(Of course, the tool will need a 1/4" collet).- Carbide cutters last much longer than tool steel.- Works quite well on soft materials, such as most wood, plastics, and drywall. E.g., porcelain or other hard tiles, concrete products such as blocks, bricks, concrete stucco (in spite of their sales pitch), glass, steel, etc. RotoZip DC1 Duracut BitPros:- 1/4" bits have significantly greater resistance to breaking than 1/8" bits. They work pretty well on some tile backer-boards, but this wears them out faster.Other:Cutting some materials, such as drywall, creates lots of dust. If you are frustrated with how easy it is to snap 1/8" bits, and your application will be OK with a 1/4" bit, try one of these. E.g., using it on hard products will dull the bit in a hurry. They work best at very high speed.
It's still possible to snap one, but you have to use much more force. Has an excellent life if used only on softer materials. I use a respirator. I.e., instead of a drill, try them in a router or high-speed rotary cutter.Cons:- As with any such bit, when the material gets harder, it becomes less effective -- to useless.
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