Just a thought.....
Rather than a hole saw. Why not use speed bores. Use the larger bore
first, to fit the rim. Go down just far enough. Then use the smaller bore
for the main section. THe guide piece on the two bores should be similar,
and should help keep the two drills aligned.
As for Joe's suggestion, I had a friend a while back that needed a few shop
tools. He went to a local trade high school, and had a couple of students
do the work for him for $20. Memory is failing me, but I think he needed
to turn something on a lathe for a high school science project. I can't
remember for the life of me what the experiment was, either. sigh.......
Richard, is this an option on the other side of the pond?
-----Original Message-----
From: Joe Curry [mailto:spitlist@gte.net]
Sent: Monday, November 06, 2000 1:01 PM
To: Luke Lewis
Cc: Spitfire List; Richard B Gosling
Subject: Re: Clock mounting
Using the second (larger) hole saw to cut the larger hole for the recess
sounds like a good idea, but I have found that unless you have
a drill press to hold the saw in place and some way to clamp the piece you
are sawing into, you will end up with a recess that is off
center with the other hole.
Therefore, if you have a drill press, clamp the piece onto the bed of the
press and drill out the smaller hole. Then without releasing
the piece, change to a larger saw and use a stop to set the depth of the
recess. That should work fine.
Joe
Luke Lewis wrote:
>
> After doing this to both my old plastic dash, and the new Cherry dash that
I
> made this summer, I would definitely recommend using a holesaw of the
> correct OD for the main hole, and another for the bigger OD section (That
> takes some control but it's possible) ... Using a jigsaw makes it too easy
> to bodge the job, and you don't get a second chance!
>
> Luke
> '71 mk.IV
> London.On.Can
>
> ----- Original Message -----
> From: "Richard B Gosling" <Gosling_Richard_B@perkins.com>
> To: "spitfires" <spitfires@autox.team.net>
> Sent: Monday, November 06, 2000 9:02 AM
> Subject: Clock mounting
>
> >
> > After my adventures last week, losing my toolbox on the way home from
the
> TRGB
> > Autojumble (see True Gentleman!), I did actually manage to come home
with
> some
> > stuff from TRGB, including an old clock (which, with an old radio, a
> battery
> > clamp, and an armrest cost me a fiver!). This is not a perfect match
for
> the
> > other gauges (it is a Keinzle), but it is the right size and reasonably
> > similar, and it works (!), so I plan to fit it to Daffy - she's not a
> tidy
> > enough car for me to worry about acheiving perfection, by a long way!!
> >
> > Anyway, this means I will have to start chopping holes in my dash. I
plan
> to
> > put the clock where the light switch currently sits, between the temp
> gauge
> > and the fuel gauge, so there are 3 nice gauges in a row - the light
> switch
> > moves to the far side of the steering wheel, currently empty.
> >
> > Anyway, my question - How do I cut the hole to fit the gauge?
Presumably
> I
> > need a hole the diameter of the gauge body, plus a recess the diameter
of
> the
> > outer rim, creating a stepped hole, so the gauge is recessed like the
> others.
> > The main hole is no problem - I plan to use an electric jigsaw - but
how
> do I
> > create the slightly larger diameter recess? I suppose the perfect
answer
> is
> > to use a router, but I don't own one, nor do I really want to spend the
> money
> > on one to fit a clock that cost me a fraction of a fiver. I do own a
> couple
> > of electric hand drills as well as the jigsaw, but that's about it for
> power
> > tools. Can I get an attachment for a drill that will do it for me? If
I
> try
> > that have I got a hope in hell of keeping a straight-ish (or rather a
> > smooth-ish-ly curved) line, and even depth? What else could I do? Can
> > routers be rented, and if so, for what sort of money?
> >
> > Richard and Daffy (got me tunes now, just want to know the time!)
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