Ausmini
It is currently Wed Jul 23, 2025 8:53 am

All times are UTC + 10 hours




Post new topic Reply to topic  [ 12 posts ] 
Author Message
PostPosted: Wed Jul 16, 2008 9:44 pm 
Offline
SooperDooperMiniCooper ExpertEngineering
User avatar

Joined: Fri Apr 29, 2005 9:46 am
Posts: 18887
Location: Under the bonnet son!
Hey all,

I've been welding in the last of the panels on the cooper and have been finishing up in the boot.

Can anyone enlighten me on the art of beating a complex curve into metal sheet? I've got a half decent set of metal dollies and hammers but not a lot of metal forming experience. Generally I've been beating panels to get them straight but no metal forming.

I've got the rear edge of the wheel well to replace and the rest of the boot floor (with the exception of the battery box) is generally ok. So the curve is a little more complex than a simple bend being in two dimensions.

cheers

Mick

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 9:49 pm 
Offline
1360cc
1360cc

Joined: Mon Jan 16, 2006 7:59 pm
Posts: 11749
small bag of sand, clothe or leather mallet and object of similar radius and a lot of time.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 9:51 pm 
Offline
1098cc
1098cc
User avatar

Joined: Fri Jul 15, 2005 8:13 pm
Posts: 1674
Location: Bunbury/Barrow Island
easiest way is with an english wheel which you probably dont have...
Apart from that you need a sperical dolly and a lot of patience i suspect!

_________________
Noli Illegitimi Carborundum


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 9:56 pm 
Offline
1275cc
1275cc
User avatar

Joined: Fri Jun 17, 2005 10:31 am
Posts: 3183
Location: Burpengary, Queensland - Home of Tricky Performance Engineering
Mick,

There are a couple of different ways. They are:
1. Hammerforming
2. Planishing
3. Rolling.

With number 2 you will need a planishing hammer and with number 3 you will need and English wheel. If you can make up a wooden former, you the can use it shape the metal in complex, mulitple compounding curves - hence the hammerform.

You can shrink and stretch by beating and folding edges and centres. Heat is often used to do this.

I got an immense amount of info from this site: http://www.metalmeet.com

_________________
"Not Speeding Officer..........Qualifying"


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 10:19 pm 
Offline
1275cc
1275cc
User avatar

Joined: Sat Apr 14, 2007 8:34 pm
Posts: 3415
Location: Cowra
why not just cut it out and weld a new bit in there from your donor shell?

_________________
Image


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 10:25 pm 
Offline
SooperDooperMiniCooper ExpertEngineering
User avatar

Joined: Fri Apr 29, 2005 9:46 am
Posts: 18887
Location: Under the bonnet son!
That is the floor from the donor shell! It's nearly at the stage where I could run around with the mig and fill in the holes, but the rest of the back edge is a little too pitted. I would like to replace it, but the pitting carries up the back edge. I 'spose I could get a wheel well repair section and cut it out, these are available right??

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 11:10 pm 
Offline
1275cc
1275cc
User avatar

Joined: Sat Apr 14, 2007 8:34 pm
Posts: 3415
Location: Cowra
oh i understand now.

Yeah i think you can buy just the rear section of the boot from about the wheel arch backwards.

_________________
Image


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jul 16, 2008 11:16 pm 
Offline
Yay For Hay!
User avatar

Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15912
Location: Wodonga - Vic/NSW border
there's a clubman shell in my dad's back yard in Ballarat that should have that part of the boot floor intact - pm me for his number if you want to go and chop it out

_________________
did I tell you that I won a trophy?


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 17, 2008 10:31 am 
Offline
998cc
998cc
User avatar

Joined: Sat Aug 27, 2005 3:19 pm
Posts: 630
Location: Blue Mountains
Check out these videos on custom body work
http://youtube.com/profile_videos?user=GullWingInn&p=r
I would love to have these skills


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 17, 2008 1:40 pm 
Offline
1360cc
1360cc
User avatar

Joined: Mon Jul 26, 2004 7:23 am
Posts: 7339
Location: Sunny Shine Coast, Qld Australia
Slight Hijack - has anyone a pretty well hacked up floor pan that would have a piece left big enough to cover the hole left by a remote gear lever?
Needs to be sort of figure '2' shaped to go over the tunnel, down the side and flat on the floor. Don't want to hack a good floor and it would be easier than trying to bend up a bit.

_________________
David L
Image

My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 17, 2008 2:14 pm 
Offline
SooperDooperMiniCooper ExpertEngineering
User avatar

Joined: Fri Apr 29, 2005 9:46 am
Posts: 18887
Location: Under the bonnet son!
Thanks for the help all, I decided I am not much of a sheet metal fabricator and picked up a repair panel today from one of the local mini guys down over my way. Thanks for the tip on Youtube, I've been enjoying the vids, although I could never be a custom fabricator's arsehole, I reckon I could fool someone I was if I keep picking this stuff up :)

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jul 17, 2008 3:00 pm 
Offline
1360cc
1360cc
User avatar

Joined: Thu Feb 03, 2005 1:41 pm
Posts: 12311
Location: Rockingham - Collie WA
Mick, if I can make half a Harley fuel tank using just a file, a hammer & an old log with one day's tuition (remember this), I'm sure you could pick it up.

Have a bash at it!

_________________
Too many cars, and too little time.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC + 10 hours


Who is online

Users browsing this forum: Bing [Bot] and 80 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.