I’m going nuts and could really use some help !!
I’m working on a piece in the married metal technique. It’s a round
plate, about 7 inches in diameter (or will be when I’m done). The
metals include silver, gold, copper, brass, and shibuichi and I
started the process with 18 gage metal – assuming it will be down to
20 or 22 by the time I’ve finished it. I’m down to the last three
sections. One of which is the very middle, which is quite large,
consists of fine silver with a fairly intricate gold design in the
middle. My original decision was to put that piece in last: 1)
because I wanted to keep the heat sink factor as low as possible in
working with the rest of the plate and 2) because if I had to redo
anything, I didn’t want it to be that piece.
The other 2 pieces are shibuichi, are relatively similar in shape,
sort of a very shallow pie cut, with the angle being an obtuse angle
of about 140 degrees (a lazy “L”??). Yes – this piece is nearly all
straight lines and angles and it’s been a bugger to keep it going!!
My problem is that I cannot get either of these two pieces soldered
onto the remaining section of the plate. I have two torches and the
solder flows (I’m up to using medium solder now). The edges are
clean and as best I can tell, the fit looks good. The only thing I
can think of is that there is just enough warpage in either or both
of these to make it not work. To keep warpage to a minimum, I
generally cover the large piece with firebrick and then weight those
down with every heavy piece of steel I can lay my hands on. I’ve
changed types of soldering surfaces, having used honeycomb earlier
(in order to have a really flat surface) and am now working on one of
those silquar (sp?) boards.
Does anyone have any ideas that will help me get these pieces
absolutely as flat as possible and not suck up all my heat? Am I
approaching this from the wrong direction?? Am I using the wrong
soldering surface?? I chose it because it is hard, flat, and seems
to really reflect the heat back into the piece. I’ve done married
metal pieces a number of times in the past, but this is the largest
and heaviest one to date.
I’m trying to finish this prior to the end of February ( it’s to be
used by a church during Lent! !) and I thought I had this deadline
made (yeah right !!)
Any thoughts at all would be greatly appreciated!!!