rf shieling/screened boxes
 

looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

thanks

simon g0zen

On Sun, 4 Apr 2004 03:06:10 +0100, "zindazenda"
wrote:

looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

I've not tried it as I can't find any suitable sheet metal, but
aparently if you score the inside of the fold line with a scalpel
blade then the bend goes easier.
Where are you finding the sheet tinplate?.

hth Mike W, G8NXD

On Sun, 4 Apr 2004 03:06:10 +0100, "zindazenda"
wrote:

looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

I've not tried it as I can't find any suitable sheet metal, but
aparently if you score the inside of the fold line with a scalpel
blade then the bend goes easier.
Where are you finding the sheet tinplate?.

hth Mike W, G8NXD

On Sun, 4 Apr 2004 03:06:10 +0100, "zindazenda"
wrote:

looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

The tool used in machine shops for this is called a "sheet metal
brake", and will do all that you are asking for, partial width folds,
exact angle bends, etc.

You might find a small used one out there, but looking at a picture of
one will give you ideas for a home version.

There are plans for building one, which might be best for you, as you
can readily scale everything down.

Acceess to a machine shop for some of the parts would help.

Some useful references from Google:

http://www.amazon.com/exec/obidos/tg/detail/-/1878087061/104-8014419-0819955?v=glance

http://www.artmetal.com/brambush/forum/bramyak2/messages/806.html

http://www.homemetalshopclub.org/news/dec01/dec01.html

http://www.lowbucktools.com/brakes.html

http://www.stevehenryracing.com/brakeplans.htm

These are just from the first page of results.

Also see eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3806706453&category=25 278

HTH,
Happy trails,
Gary (net.yogi.bear)
------------------------------------------------
at the 51st percentile of ursine intelligence

Gary D. Schwartz, Needham, MA, USA
Please reply to: garyDOTschwartzATpoboxDOTcom

On Sun, 4 Apr 2004 03:06:10 +0100, "zindazenda"
wrote:

looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

The tool used in machine shops for this is called a "sheet metal
brake", and will do all that you are asking for, partial width folds,
exact angle bends, etc.

You might find a small used one out there, but looking at a picture of
one will give you ideas for a home version.

There are plans for building one, which might be best for you, as you
can readily scale everything down.

Acceess to a machine shop for some of the parts would help.

Some useful references from Google:

http://www.amazon.com/exec/obidos/tg/detail/-/1878087061/104-8014419-0819955?v=glance

http://www.artmetal.com/brambush/forum/bramyak2/messages/806.html

http://www.homemetalshopclub.org/news/dec01/dec01.html

http://www.lowbucktools.com/brakes.html

http://www.stevehenryracing.com/brakeplans.htm

These are just from the first page of results.

Also see eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3806706453&category=25 278

HTH,
Happy trails,
Gary (net.yogi.bear)
------------------------------------------------
at the 51st percentile of ursine intelligence

Gary D. Schwartz, Needham, MA, USA
Please reply to: garyDOTschwartzATpoboxDOTcom

zindazenda wrote:
looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

thanks

simon g0zen



Micro-Mark, Small Parts, Inc, and McMaster Carr in the US all have
miniature brakes for this. I don't know what the UK equivalent company
would be, but I'd be surprised if there isn't something out there that
you can buy.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

zindazenda wrote:
looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got plans of
a mini folding jig??has to be able to adjust width of fold as will be used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids.. up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

thanks

simon g0zen



Micro-Mark, Small Parts, Inc, and McMaster Carr in the US all have
miniature brakes for this. I don't know what the UK equivalent company
would be, but I'd be surprised if there isn't something out there that
you can buy.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

thanks peoples...

oh i get the tin plate from RS components..costs about £13 i think for 10
sheets (300 x 400mm i think)..would have to look it up but catalogue not
here..

they do 0.2 upwards..

simon
"Tim Wescott" wrote in message
...
zindazenda wrote:
looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got
plans of
a mini folding jig??has to be able to adjust width of fold as will be
used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids..
up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

thanks

simon g0zen



Micro-Mark, Small Parts, Inc, and McMaster Carr in the US all have
miniature brakes for this. I don't know what the UK equivalent company
would be, but I'd be surprised if there isn't something out there that
you can buy.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

thanks peoples...

oh i get the tin plate from RS components..costs about £13 i think for 10
sheets (300 x 400mm i think)..would have to look it up but catalogue not
here..

they do 0.2 upwards..

simon
"Tim Wescott" wrote in message
...
zindazenda wrote:
looking to make my own little tin plate screened boxes..have been making
them, but getting a nice clean tight fold is tricky..has anyone got
plans of
a mini folding jig??has to be able to adjust width of fold as will be
used
on different sized boxes..typical size 60mm x 50mm x 25mm. with 2 lids..
up
to 150mm x 50 mm x 25mm

tin plate 0.2mm thickness..

thanks

simon g0zen



Micro-Mark, Small Parts, Inc, and McMaster Carr in the US all have
miniature brakes for this. I don't know what the UK equivalent company
would be, but I'd be surprised if there isn't something out there that
you can buy.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

zindazenda wrote in message
...
thanks peoples...

oh i get the tin plate from RS components..costs about £13 i think for 10
sheets (300 x 400mm i think)..would have to look it up but catalogue not
here..

they do 0.2 upwards..

That's where I get mine from. I use the thin stuff as it can be hand folded
by using a couple of blocks of metal. It's also easy to cut with a pair of
household scissors and of course solders magnificently.
regards
john