Saturday, October 27, 2012

Can two halves make a whole

Every time I put together the two halves of sheet metal that were formed from side number one and side number two of a Masonite die, I always relish the thought of cutting off the flange from the sheet metal completely. I usually leave a small flange on each piece. If they were cut off completely the difference could be seen if the edges did not meet up with each other. I have been told that the space in between the inside edges of the two formed halves could be filled with half round wire and then the flange could be cut away. The piece cant be completely closed though. I have also been told that the two halves can be tig welded together. I think I came up with another idea. The other day I brazed two halves together that were formed from each side of a die. They were brazed from the inside. I was able to do that because each half was half of a circle and there was an opening that allowed me to do so. I filled the gap in between the edges of the two halves, with brazing rod. While I was brazing I kept thinking of the times when I was told that solder would not jump gaps. Hopefully I’ll prove those people wrong...lol... It worked so far but I’ll find out for sure after I cut away the flange.

Wednesday, June 2, 2010

Hydraulic Die Forming Metal Art!

Hydraulic die forming is a metalforming technique that is used to press metal into a die using hydraulic pressure, One Die forming technique is to use a conforming die, or a die that has a male portion and female portion to it. The metal is sandwiched in-between the two halves and the male half is pressed into the female half of the conforming die.The two halves are pressed together using a hydraulic press.

Which metal are you? Find out if you have a gold or silver personality!

Charles Lewton-Brain created the copper piece pictured here, which was made using the die forming technique from Brainpress.com
Also, the metal can be pressed into a female half of a die by a pad of Flexane. Flexane has some of the same characteristics of rubber. The metal is sandwiched in-between the flexane and the die. The Flexane is pressed into the die with hydraulic pressure.
This is a technique similar to what is used to mass-produce metal articles used in just about every industry from the auto industry to the aircraft industry.
This technique is also used to produce jewelry and other art made of metal at a much lower cost than what it would cost to mass-produce something for the aircraft or auto industry.
If you are handy around the shop than a hydraulic press used for this technique can be made for about a hundred dollars or less. If you would rather purchase a hydraulic press you could pick up a very good one for around a thousand dollars. I've seen them for sale online on E-bay and at the Bonny Doon Engineering web site.
A great site that includes two plans to build a hydraulic press,one that is similar to the picture below, and the other is a bolt together option that can be put together without any welding.
Check this out for hydraulic press construction plans

and this page on the same site,has tips on low cost die forming

Here is the link to the Bonny Doon Engineering web site! Where you can purchase aHydraulic press

hydraulic press