locoboy
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| posted on 12/5/07 at 09:23 AM |
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drilling tube
I want to drill a series of holes in a straight line in some 1 inch tube at set centres.
Whats the easiest way with no fancy equipment of marking a line down the length of the tube and keeping it true?
Its eamless otherwise i would drill it on the seam - its not structural btw just decorative!
Thanks
ATB
Locoboy
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scottc
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| posted on 12/5/07 at 09:58 AM |
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make a jig, 3 pieces of word in a U shape, drill a hole in the bottom of the 'u' and scribe a line along the pipe.
Hole doesn't have to be perfectly centred cos the tube can turn.
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BenB
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| posted on 12/5/07 at 10:06 AM |
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If you've got a bit of square section pipe with an ID the same as the OD of the tube its easy  Just drill a hole in the middle of the square
section, stick the tube down and drill.... If you paint a line on the end of the tube and keep it horizontal as you slide the tube in you'll
know they'll all be lined up.....
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designer
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| posted on 12/5/07 at 10:10 AM |
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Clamp the tube to a surface and then, using a square, rub along the side to mark the tube.
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rusty nuts
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| posted on 12/5/07 at 03:09 PM |
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length of angle iron smaller than the tube, lay the tube in angle and scribe along the side. Easy , accurate and locost
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mangogrooveworkshop
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| posted on 12/5/07 at 03:52 PM |
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Mark it up and post it to me.
Ive got a slide vice on my pillar drill that does this job just lovely.
See my posting mango BBQ grill
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locoboy
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| posted on 12/5/07 at 05:41 PM |
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Rusty, good advice thanks
Mango thanks for the offer, its a variation on your grill that im copying!
Hope you dont mind.
Cheers
ATB
Locoboy
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iank
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| posted on 12/5/07 at 08:53 PM |
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Tube centreline marker
http://www.rorty-design.com/images/centre_marker.jpg
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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Gav
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| posted on 13/5/07 at 08:25 AM |
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When i was a structural engineer, what i used to do was clamp/tack the tube down, find the center pointer at each end by getting a small torpedo
spirit level and setting it at the end of the tube so its vertical then just measure from the side of the tube so the edge of the level is bang in the
middle of the tube then make a chalk mark at the top, repeat t'other end then use a chalk string to match up both marks.
Although this was used for somewhat larger tubes than i think you'd be using to build a car with!!
[Edited on 13/5/07 by Gav]
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