I've been looking at getting a spin saw or a router with a Jasper Circle jig to do some
cutouts in MDF or Baltic Birch plywood. Then, out of the corner of my eye, I
spotted my electric drill in its drill guide base. The base has a number of pre-drilled
holes in it but the information on these is long gone if there ever was any. So I don't
know if one of the Jasper jigs could be attached. But the holes themselves could
be measured for radiuses and maybe match up what I need as a circle cut.
These holes would be used as the center and secured by a screw. This is the
system I've seen for jigsaw attachments sold at the local menards: some holes
in the frame of a little $6 jig can act as the center to use a jigsaw for circle
cutting as well.
I was wondering if the drill's mandrel could be used with one of those cutting bits
that the little Roto-Zip-type spin saws have? Other question is could the Jasper
circle jig fit onto those predrilled holes.? Then there's the problem of having a
trigger power switch that maybe an assistant could keep depressed.
Is there any danger or other extreme reason why a Roto-Zip wood cutting bit
cannot be chucked up in the hand drill,( or a drill press for that matter) to use
as a spin saw?
[email protected]
Original message is below.
There were no replies to this thread but I was so pleased
to have some success with this technique that I'm making
this short followup.
The technique of using an electric hand drill in a drill guide
such as those sold by Sears plus one of the RotoZip bits can
successfully cut through a 3/4 piece of fiberboard. High speed must
be maintained and eye protection must be worn. I snapped a
couple of the RotoZip bits before using steady high speed
and a very gradual turn to make my cutout.
There would be more control with an actual spin saw or RotoZip
tool. The the gear supplied in one of the kits to make circle
cuts and so-on would be the preferred method of work. But for
me, the practice with tools I have gave me the encouragement
to get a spin saw very soon.
Main difference between the drill setup and a spin saw is the
mandrel rotation: the spin saw has a much higher RPM than
a hand drill.
Eye protection is critical.
The last question that remains to be answered for this setup
is whether or not the sole plate of the drill guide would
accept a calibrated Jasper Circle Jig for increased
flexibility.
I've posted after my initial try at this. If there is interest
send me a mail and I will answer any questions.
[original follows]
Lon Ponschock <[email protected]> wrote in message news:<[email protected]>...
> I've been looking at getting a spin saw or a router with a Jasper Circle jig to do some
> cutouts in MDF or Baltic Birch plywood. Then, out of the corner of my eye, I
> spotted my electric drill in its drill guide base. The base has a number of pre-drilled
> holes in it but the information on these is long gone if there ever was any. So I don't
> know if one of the Jasper jigs could be attached. But the holes themselves could
> be measured for radiuses and maybe match up what I need as a circle cut.
>
>
> These holes would be used as the center and secured by a screw. This is the
> system I've seen for jigsaw attachments sold at the local menards: some holes
> in the frame of a little $6 jig can act as the center to use a jigsaw for circle
> cutting as well.
>
>
>
>
> I was wondering if the drill's mandrel could be used with one of those cutting bits
> that the little Roto-Zip-type spin saws have? Other question is could the Jasper
> circle jig fit onto those predrilled holes.? Then there's the problem of having a
> trigger power switch that maybe an assistant could keep depressed.
>
>
> Is there any danger or other extreme reason why a Roto-Zip wood cutting bit
> cannot be chucked up in the hand drill,( or a drill press for that matter) to use
> as a spin saw?
>
>
>
> [email protected]