#11
|
|||
|
|||
Quote:
has a 83" e28 2.8 with a funny cam - screams to 6500 rpm can drive it until I fix the rust - I also cracked the windscreen trying to get it out - thankfully I have 3 spare parts cars! I have a 78 parts car - which if I have too could remove the panel - but I figure I might as well have a go at making one first - as the dark blue E28 is starting to show rust in the same location!
__________________
Gary Dorn Perth Australia |
#12
|
|||
|
|||
I have a - olive wood mallet, vice grips, wood stump, steel 2Lb hammer, chisels, henrob 2000 gas welder with gas, vice, 200mm long of 150UB14 ("I " beam, cordless drill and bits, hole saw kit, various files - mostly woodworking hand tools.
__________________
Gary Dorn Perth Australia |
#13
|
|||
|
|||
Well I've had a go,- justing using pliers, clamp, piece of structural angle and universal beam.
First, I made a wood template so piece could be clamped and held whilst I bent first lip with pliers - progressively bending from edge to middle. This first bending tended to be a bit straight, so I hammered the middle and ends a fair bit on the the angle to create the curve. With a bit of more flaming, bending then hammering (hammering on the top edge of the angle) I managed to manipulate the steel to bend along the desired line. Using a clamp to fix the piece to the angle, I was then able to slowly bend the sheet for the 2nd lip with the piers - starting at ends and moving to the middle progressively, hammering at times to straighten out the kinks. I did the same thing on the other side Again clamping to a Universal beam flange, I was able to bend up the last lip - then hammered it flat(ish) For a novice first try - not bad - need a far bit of planishing, plus I got the dimension slightly too large.
__________________
Gary Dorn Perth Australia |
#14
|
||||
|
||||
Often ends up too large if you don't take off the material thickness with each bend depending on which direction it is going.
__________________
Marcus aka. Gojeep Victoria, Australia http://willyshotrod.com Invention is a combination of brains and materials. The more brains you use, the less materials you need. |
#15
|
||||
|
||||
Gary before you start bending the piece measure it's width and then rite down the measurement from the edge each time you make a bend. That way when the sample piece is done you can find out which of the bends has to be moved to get the desired result.
Jere
__________________
Jere Kirkpatrick Valley Forge & Welding HEN-ROB Torch Dealer. Teaching The Fundamentals of Metal Shaping www.jerekirkpatrick.com All tools are a hammer except the chisel.....That's a screwdriver. |
#16
|
|||
|
|||
Hi gary if you can wait to just after Christmas you can come and use my new bead roller.
cheers paul
__________________
Paul |
#17
|
|||
|
|||
Could you explain alittle more because I have a hard time with this also when I do multiple bends in a piece sometimes my pieces either come out to long or to short, understanding this and doing some practice would keep me from making as much scrap.
__________________
Eric Crafton |
#18
|
|||
|
|||
If you read up on "bend allowances" you'll get an idea of why you're getting results different than what you expect.
With some understanding of what happens "during" a bend, it's pretty easy to "repeat" within 0.020 on a brake. Same principles apply to any forming by bend. regards marc
__________________
Marc |
#19
|
|||
|
|||
Can I just subtract the material thickness from each bend?
__________________
Eric Crafton |
#20
|
||||
|
||||
Quote:
http://www.allmetalshaping.com/showt...=12411&page=13
__________________
Marcus aka. Gojeep Victoria, Australia http://willyshotrod.com Invention is a combination of brains and materials. The more brains you use, the less materials you need. |
Thread Tools | Search this Thread |
Display Modes | |
|
|