drilling welds and cutting panels

Quote:

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Originally Posted by Brian Hjelm

Come in 8.0mm & 6.5mm diameter.

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What is diameter of spot welds on our Landies? Are we trying to cut exact diameter of weld or just outside it?

Hi
the cutter has to cut a track just larger than the spot weld.
If too small you will leave some of the weld till attached
just cut through enough to allow the cut piece to come free.
do not cut too far into the back sheet, so not weaken it.
cheers
Ian

Quote:

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Originally Posted by Brian Hjelm

Use kerosene as a cutting fluid on aluminium. Stops chips welding to the cutting tool. Normal practice in machine shops.

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I have used kerosene in the past but dislike it due to the smell and fire risk.

"Fitting and Machining", TAFE Publications, 2009, specifies kerosene or soluble oil.

I haven't had any adverse issues with soluble oil,

Cheers Charlie

The spot welds on the early Land Rovers are generaly
a bit bigger than todays welds.
25/64 or there abouts works well
I never use any coolant as it makes a mess.
Generaly you are only drilling through panel material and
is very quick so it don't generate mutch heat
It is very Quick so you have to be carefull or oops you go through
Easy to do.......Mark