mistergrumpy
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| posted on 7/10/07 at 05:49 PM |
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Stitch Drilling
Has any one any top tips on how to release summat in ally after I've stitch drilled it? When I've tried in the past I end up bending the
piece or warping the edges.
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mark chandler
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| posted on 7/10/07 at 05:54 PM |
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Heavy hammer behind, cut with a sharp chisel & hammer.
Better yet, jig saw and file
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AdrianH
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| posted on 7/10/07 at 05:59 PM |
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What are you making, is it thin ally or thick ally.
Is it a case of one piece fitted in another so you can provide a gear type edge or just trying to cut a shape out of it?
Adrian
Why do I have to make the tools to finish the job? More time then money.
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roadrunner
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| posted on 7/10/07 at 06:00 PM |
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Have you tried using the drill side ways through the holes, works for me, but it does depend what the thikness is.
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mistergrumpy
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| posted on 7/10/07 at 06:03 PM |
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1.5mm ally for the dash.Two circles for the clocks. Didn't trust the hole cutter I have, tends to jump and wander
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roadrunner
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| posted on 7/10/07 at 06:07 PM |
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Push the drill you used left or right, it will easy do 1.5 mm.
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AdrianH
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| posted on 7/10/07 at 06:09 PM |
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Not sure of the hole sizes required, but what about one of the plasterboard or tile cutters such as item number 140165148746 on ebay. Perhaps with a
slow drill it may do aluminium.
Basically just a trammel cutter.
Adrian
Why do I have to make the tools to finish the job? More time then money.
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richard thomas
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| posted on 7/10/07 at 06:15 PM |
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Chain drill 3.3mm holes (1/8" , then drag the drill bit from one hole to the next in a clockwise direction with the material around half way up
the flutes - it cuts better that way. Don't force it, let the bit do the work. Drill the holes as close together as possible.
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mistergrumpy
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| posted on 7/10/07 at 06:22 PM |
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Cheers fellas I'll give it a go. I like the chisel idea too. I've drilled them all close together. My right arms like popeyes now after
keep using the drill!
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RazMan
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| posted on 7/10/07 at 08:31 PM |
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I've used a pair of side cutters to snip between the holes in the past - worked for me in 3mm plate 
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Simon
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| posted on 7/10/07 at 10:14 PM |
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I'd use the hole cutter with some tallow where the cut is, and the ally being cut clamped between two pieces of ply.
ATB
Simon
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Bluemoon
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| posted on 8/10/07 at 08:38 AM |
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When chain dilling the idea is to start undersized so the holes don't meet then increase until they do... Then in theory the two parts will be
separated once you have finished...
Dan
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Fred W B
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| posted on 8/10/07 at 08:42 AM |
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Just use a jig saw? You only need to drill
one hole to start from,
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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mistergrumpy
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| posted on 8/10/07 at 08:48 AM |
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I find a jigsaw really inaccurate and it tends to grip in the metal and doesn't like going round bends.
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02GF74
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| posted on 8/10/07 at 09:02 AM |
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I've just made a dash from 2 mm ally. Drill one hole then use a nibbler.
Before I had the nibbler, I would do the hole drilling and increase drill size until a hack saw blade fits in them - saw the small inbetween bits by
hand or else use a file.
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rusty nuts
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| posted on 8/10/07 at 05:04 PM |
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If you can get the blade in try a woodworking coping saw, worked for me when I made my inlet manifold out of 12mm plate and my nose badge out of 3mm.
Use with a bit of lubrication
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