diffrent way to make a blister

[SATAUS]

After seeing Randy Ferguson hammer forming a “63 Pontiac header panel “
http://metalmeet.com/forum/showthread.php?t=6247&highlight=randy
I wondered if I could hammer a blister over a plug I had made for a fiberglass
mould a while ago. I know this is only for one size of blister and would be a lot of work
if you had to make the hammer form for every size blister you may have to make
but I just wanted to see if it could work so here I go.

This is the plug for the fiberglass mould


I taped it up to protect the surface
just in case I want to use it again.


cut some 5005 H14 to size


Then annealed it


screwed it down onto the hammer form


started of with a rubber mallet


progress looking good


got as far as I could with the
rubber mallet then went to a wood
hammer made from an old cherry tree




got this far and found it was work
harding again so annealed it again




when the soap turns black it
has gone soft again


back into it with the wood hammer


at this stage I couldn’t get into the corners
with the wood hammer any more so made up
a wood wedge with the right rad on it and
got the part tighter on the hammer form
with this



after the wood wedge and some
hitting down on the face of the flat surface
to planish it out a bit with the plastic hammer
it was done.








30 second rub with some scotch
brite showed up some lumps and bumps


mark out for trim up


gave it a very soft planish




then sanded it with 240 wet and dry
and some scotch brite




You could spend some more time planishing it
but for the exercise to see if it would work it
is good enough.

Have fun

Scott (Australia)

[AndersK]

That looks great!
Good to have you back posting

/Anders

[SATAUS]

Hi Anders,

Thanks for the complement.
Was waiting for the dust to settle with what was going
on with the site.

Scott

[AndersK]

Now we'd better stir the dust up again,
by posting amazing work

[jlrussell4]

Looks good, Scott Thanks for taking the time to post this.

[3 Chiefs]

Scott you really did a nice job. Sometimes I still get amazed at how rough our projects look in the beginning rough in stages, but when we are done planishing they are beautiful. Thanks for posting this with so many pictures.

Paul

[MP&C]

Good work!

[John Jordan]

I still don't see pictures.

[oldgoaly]

Hey Scott!
Great job on the blister and "Keeper" post, my question did you use bondo to smooth fibreglass? do you think the aluminum might show the fibreglass cloth if it was exposed? I guess steel isn't that soft to pick many flaws. tt
If you click on Scott's pics you will get the FULL size pic.

[AndersK]

Originally Posted by oldgoaly

do you think the aluminum might show the fibreglass cloth if it was exposed?

It will.

I thought I almost cracked one piece, looked just like alu does when you have worked it a little too much between annealing.

When I made the second piece from the same form exactly the same defect appeared. It was in the form, a small piece had fallen out.
Also had some areas of exposed cloth, transfered to the ali as well.