[Shop-talk] Drilling holes in sheet metal

[Chadwick E. Labno]

Can a Rotabroach (annular cutter) be used in something
other then a Rotabroach machine (mag base drill),
IE: milldrill, drill press, hand held drill motor, etc.?
chad

Nick Brearley wrote:

>Chris Kantarjiev wrote:
>  
>
>>I'll second that - I have a set of these (then called Rotabroach, but 
>>the same item) and they're really great. Not sure they work as well as 
>>a unibit on some materials - I have both. The unibit gives a wider 
>>range of sizes, but won't work on thick stuff. The rotacut can wander 
>>a bit.
>>
>>
>>    
>>
>Important to centrepunch the hole well and keep the Rotacut centreguide 
>sliding freely. A little cutting oil works wonders. The fullsize 
>Rotabroach machine is a very impressive piece of kit when you see it 
>clamped in the middle of a large sheet cutting a two inch hole effortlessly.
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