i was thinking of placing them on SUV tyres which should provide
enough clearance for the circular saw. would the weight be sufficient
of will i have to clamp it somehow.

i guess ill get some saw horses for the smaller section. but it seems
to me tyres will be more stable and its not as far off the ground, so
the cutoffs are supported as they come off.


thanks

On 25 Jul 2004 05:55:53 -0700, (yihang bmc-unsw)
wrote:
i was thinking of placing them on SUV tyres which should provide
enough clearance for the circular saw. would the weight be sufficient
of will i have to clamp it somehow.

i guess ill get some saw horses for the smaller section. but it seems
to me tyres will be more stable and its not as far off the ground, so
the cutoffs are supported as they come off.
========================================

If you have a level concrete floor to work on, here's what works for
me. I use 6 or 7 furring strips about 4 feet long and lay them down
on the floor, plywood goes on top. The plywood is supported every foot
or so which is more than adequate. The cutoffs are fully supported
and everything is rock solid as you make the cut. I use an 8 foot
piece of MDF for a fence, clamped on each end. Set the depth of cut
for just slightly more than the plywood thickness.

i have to cut the ply length wise, i guess that means ill need strips
more than 4 feet long. ill see what i can find.

i just have the tyres available, thats why i asked. ill put the ply on
top of the tyres and see how stable the whole thing is. if its not
satisfactory, ill use one of the the above ideas.

thanks

On 26 Jul 2004 06:20:24 -0700, (yihang bmc-unsw)
wrote:
i have to cut the ply length wise, i guess that means ill need strips
more than 4 feet long. ill see what i can find.
======================================

No, I recommend putting the strips along the 4 ft dimension. The saw
blade will nick the top of the strips but will not cut through as long
as cutting depth is set properly.

I believe the tires will be too unstable to make a safe cut. Also,
the blade will not like cutting rubber.

Wayne B says:

Also,
the blade will not like cutting rubber.

Rubber's OK, it's the steel reinforcing that's the real kicker! ;-)

Steve

Stephen Baker ) writes:
Wayne B says:

Also,
the blade will not like cutting rubber.

Rubber's OK, it's the steel reinforcing that's the real kicker! ;-)

here's an example of where the boatbuilder wants polyester instead of
kevlar - in the tire cord of those tires you're going to slice up.

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I put them on a floor or on the driveway on top of 2x4's placed so I'm
not cutting through the 2x4's. The blade depth is set so the saw teeth
just show through the plywood. That way curves can be cut.

yihang bmc-unsw ) writes:
i was thinking of placing them on SUV tyres which should provide
enough clearance for the circular saw. would the weight be sufficient
of will i have to clamp it somehow.

i guess ill get some saw horses for the smaller section. but it seems
to me tyres will be more stable and its not as far off the ground, so
the cutoffs are supported as they come off.


thanks


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------------------------------------------------------------------------------
William R Watt National Capital FreeNet Ottawa's free community network
homepage: www.ncf.ca/~ag384/top.htm
warning: non-FreeNet email must have "notspam" in subject or it's returned

Subject

Lay down a styrofoam sheet on the floor, say 1-1/2" thick, then lay plywood
on top.

Piece of cake.

HTH


--
Lew

S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: http://home.earthlink.net/~lewhodgett for Pictures

Lew says:

Lay down a styrofoam sheet on the floor, say 1-1/2" thick, then lay plywood
on top.

Piece of cake.

HTH



Then chase a ga-zillion little white bubbles all over the neighbourhood ;-)

Closed cell foam is way better, and can be used more than once.

Steve "pragmatist"

"Stephen Baker" writes:

Then chase a ga-zillion little white bubbles all over the neighbourhood
;-)

Closed cell foam is way better, and can be used more than once.

What ever floats your boat.


--
Lew

S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: http://home.earthlink.net/~lewhodgett for Pictures