Thread: Bugger

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.

Thanks Neil, might have to pick up some 24 hour araldyte tomorrow

Ahh that sux hope your next one turns out better

You have used a very polite expletive there Corbs!

I wasn't so eloquent in the shed

Originally Posted by artme

You have used a very polite expletive there Corbs!

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

Originally Posted by gawdelpus

Looking at that second picture ,seems you barely had room to drill the hole in the blank ,very thin indeed. ...

I think that is the hole from the pen mill , another way to tear your blank apart

Originally Posted by gawdelpus

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

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

Originally Posted by dai sensei

I think that is the hole from the pen mill , another way to tear your blank apart

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 now

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

MIK