Marking sheetmetal

I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

"Michael Horowitz" wrote in message
...
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

Fine point gel (.5mm) Pentel ink pens.
--
Jim in NC

"Michael Horowitz" wrote in message
...
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

Pencil is also not to be used because the graphite will combine chemically
with some types of sheet metal, and make it weak on the line. I don't
recall for sure which type, but I think aluminum.
--
Jim in NC

Fine point sharpie magic marker.

Scott


Michael Horowitz wrote:
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

On Sat, 16 Sep 2006 11:05:24 +0000, Scott
wrote:

Fine point sharpie magic marker.

Scott


Michael Horowitz wrote:
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

1st choice as scott says.
2nd choice, stick some tape on it and mark the tape. remove after
bending. btw leaving on the protective plastic sheet is just as
effective.

Michael Horowitz wrote:
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

Sharpies work great, come in several line widths and wipe off easy... I
used dozens while building the "beast" of mine..


Ben
www.haaspowerair.com

stol wrote:
Sharpies work great, come in several line widths and wipe off easy...

Sharpies wipe off nicely with denatured alcohol and paper towel, which
also cleans up wet epoxy, the manufacturing markings on sheet metal,
Permatex, regular dirt... and isn't excessively toxic.

Michael Horowitz wrote:
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

From an old gray hair tin bender, use a #2 pencil it will show. To get
the proper bend allowance and set back lilne I use a #2 pencil some
will use a Graphite pencil, but it is very ligh. I would suggest
wiping the sheetmetal surface clean then the pencil will be more clear.

Stache

In article .com,
"Stache" wrote:

Michael Horowitz wrote:
I want to mark sheetmetal for bending.
Can't use a scribe because I'll weaken the metal.
Magic Marker is too thick.
Pencil doesn't show.
What do you use? - Mike

From an old gray hair tin bender, use a #2 pencil it will show. To get
the proper bend allowance and set back lilne I use a #2 pencil some
will use a Graphite pencil, but it is very ligh. I would suggest
wiping the sheetmetal surface clean then the pencil will be more clear.

Stache

NOT ON ALUMINUM! The graphite from the #2 pencil will galvanically
corrode aluminum. Use a Sharpie and clean with either lacquer thinner or
denatured alcohol after you are done.

Orval Fairbairn wrote:
NOT ON ALUMINUM! The graphite from the #2 pencil will galvanically
corrode aluminum. Use a Sharpie and clean with either lacquer thinner or
denatured alcohol after you are done.

Why can't you just clean off the pencil marks?

Also, doesn't a galvanic reaction require an electrolyte between the
metals, so if you didn't erase or clean off the pencil mark but primed
and/or painted over the aluminum surface, no salt water or other
electrolyte could get in there to produce the galvanic reaction?