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Thread: Bugger
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2nd August 2013, 09:28 PM #1
Bugger
It was looking so promising as well.
Wood was Cooktown Ironwood with brass & aluminium sheet. A lapse of concentration and out she came. I suspect the glue may not have fully cured which obviously didn't help me out much either. I'd laminated with medium & thin CA and glued the tube in with polyurathane.
Guess I'm starting that one again tomorrow
CorbsIt's only a mistake if you don't learn from it.
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2nd August 2013 09:28 PM # ADSGoogle Adsense Advertisement
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2nd August 2013, 10:58 PM #2
Bummer
Stick to epoxy for laminates, especially aluminium & brass, and leave it overnight. Make sure you wipe the metals with metho too, they often have contaminates on their surfaces, plus etch the surfaces with sand paper.Neil____________________________________________Every day presents an opportunity to learn something new
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2nd August 2013, 11:12 PM #3
Thanks Neil, might have to pick up some 24 hour araldyte tomorrow
It's only a mistake if you don't learn from it.
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2nd August 2013, 11:41 PM #4Senior Member
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Ahh that sux hope your next one turns out better
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3rd August 2013, 12:39 AM #5Regards Rumnut.
SimplyWoodwork
Qld. Australia.
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3rd August 2013, 02:15 PM #6Skwair2rownd
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You have used a very polite expletive there Corbs!
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3rd August 2013, 03:50 PM #7
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3rd August 2013, 09:28 PM #8
Looking at that second picture ,seems you barely had room to drill the hole in the blank ,very thin indeed. One thing Neil (dai sensei) showed me with these dificult projects that are prone to explode is after a successful drilling ,give the inside of the tube a layer of thin CA by turning it just off the horizontal and pour in a small amount of CA to coat and soak from the inside, a bit of care is needed to not get it pouring out where you are holding it . Once dry you can ream the tube again to fit the tube before final gluing . This tends to reinforce the inside joints and help stabilize things . I tend to stabilize with thin CA as the turning progresses as well ,you need all the help you can get sometimes to get these things up and running . Cheers ~ John
G'day all !Enjoy your stay !!!
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3rd August 2013, 09:37 PM #9
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3rd August 2013, 10:11 PM #10
Normally I would do that, not really sure why I didn't this time. I guess I just got a little ahead of myself and was feeling more confident that I should have been
That's what it is. I find that drilling is the time most blow outs happen so I tape the blank holding it together. The next time is when starting turning so I round off the edges on the sander. Turning is when I lost this one though. Normally I'd do a few cuts to get round then stabilise with thin CA, turn/stabilise/repeat until I'm finished. I had a small catch on this one which just tore the laminations out.
I've started again, using the advice given above. First lamination is glued in nowIt's only a mistake if you don't learn from it.
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4th August 2013, 12:07 AM #11
but luck with this one corbs, it had great potential
take into account the amount of heat created by drilling, which is the major thing to re-enact glue and weaken bonds
the other thing you could try is to start drilling with a much smaller bit and slowly increase the size of the hole, less friction, less heat
i have used alloy glued with CA in the past with no problems until the last one, the problem i think is the drill size, all others were only 7mm holes the last was 27/64"
i can't use epoxy due to being allergic
all the best and good luck with the next one
MIKNo Result Without Effort
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