BULKHEAD (partial) DAY EIGHTEEN
I know this is tedious - but the only way to stop me from posting up more metal bashing pictures is for you lot to start doing these types of repairs for yourselves!
Today I made a start on the upper A posts. (These are the hidden strength that is not normally visible on the bulkhead corners)
I thought I had made a picture using the MTAD method for the curve I want to copy but it seems as though I didn't. Oh well here's a bit of wood about to get cut to shape and abused.
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Trim along the masking tape to get the shape you want and then trace along side with a pencil / marker
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Cut the wood with a jigsaw (technical I know but it has to be done)
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Make a second hammer form by tracing around what you've already got and clamp metal between the two
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(Stop - hammer time)
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(Yawn yawn - working from the joint between the bits of clamped wood - hit it from the crease and bend the metal upwards (or downwards if you're so inclined))
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Ignore the pointy crease and keep on hitting from below and then a little bit higher and eventually you'll get it to stretch over the form you want
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This corner ended up being "higher" than the rest of the flange because the metal has to go somewhere so I trimmed it with tin snips to get this =>
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I'm now wondering if it was smart to make this edge first - may be - may be not - we'll see. I might make the other inner A post structure differently...
...er - to be continued (I'm off making another bigger hammer for for the next stage)
BULKHEAD (partial) DAY NINTEEN
Continuation of the upper A post manufacturing =>
I'm happy to make some wooden parts to help make this / these parts but I'm trying not to fall into the trap of spending too much time wood working - as it turned out I think spending more time with the wood might have helped - I dunno...
...Here's where I woz before
I'd got a bent flanged edge that was the start of the upper A post.
I then needed to work out where the next fold needed to be made, so I did the old MTAD
Removed masking tape and marked out the shape on the sheet
Instead of making complicated wooden shapes and hammering I thought I might be ale to do the necessary with a combination of the bead roller and tipping wheel...
...the vice mounted bending jaws...
...and the hammer and chisel and the hard wood "V" blocks...
Turned out to be a blinking disaster - teddy got chucked out the cot.
To be honest I'm not quite sure where I went wrong but the bead roller seemed to add in a curve in the wrong plane - I'm sure it was the bead roller and not the operator!
^^^^
As you can see the panel is now bending the wrong way - it should be straight. Arse buckets.
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The problem above prompted this little aside - a little diversion - a wee purchase.
Such quality!
Look at that =>
It says "innovation" so it must be the dog's bollocks right?
Actually, despite the dubious references to Germany (note not actually "made in Germany") and the low price tag I'm quite surprised. It isn't total ****.
It came with tools!
And best of all it came with a pirate's sword!
'King excellent! A pirate's sword - never 'ad one of those before arrrgh
(Not at all camp)
Anyway the point is I can now cut deep / thick bits of wood for making hammer forms that will survive a good hard ****ting
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Despite the new purchase I decided to carry on with the mistake panel - I decided to cut and shut. It isn't a brilliant solution - I'd prefer to have a nicely formed one piece panel if possible (partly for reasons of ego) but as this part won't be seen I guess it'll be alright to do the dirty...
The picture above shows just how far I'd have to stretch the sheet to get it to do what I want. I'm not sure I'm up to that level of metal working just yet (!)
So measuring a triangle
Trial fit =>
Bit of welding - bit of MTAD
Back in the bead roller to help score a crease for the next stage
Messing about with the new toy
Bit more cutting - some tapping with the hammer - will weld later
Quick comparison
That's about as far as I got today.
I ran out of time, mainly because of the hilarity of the pirate's sword - lots of dicking about and arrghing I'm afraid...
(But it wasn't at all camp)