Painting Antique Power Hacksaw

[David Pidwerbecki]

I am rebuilding a 14" power hacksaw made by Champion Blower and Forge. I
figure that the saw was made pre WWII (20's-30's??) before they had sheet
metal. The saw is all cast iron castings. I disassembled the saw and took
it to an engine rebuilder and got it hot dipped. I have power brushed all
of the scale off of it and it's looking pretty good.

What should I use to prep the surface (clean) before painting
What type of primer should I use
What type of paint should I use.

Are there any pointers or special processes/techniques I should use to make
the paint turn out real good an durable?

Please reply and thanks,

Dave

[Steve W.]

Cast can be a real pain if it isn't clean. Yours probably absorbed a
bunch of crud while in the bath. I would take the parts and give them a
light sandblasting, then bake them in an oven at about 250-300 degrees
for an hour or so to bake out any oil/solvent. Then as soon as you pull
them out use a GOOD primer and give them a light coat. Let them cool
some and then spray on another coat. Now you can apply the paint.
Personally I would use an epoxy based primer and a top coat of epoxy
paint (unless your storing the saw outside or in direct sunlight).
--
Steve Williams

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[mtlwright]

Hi Dave,

I rebuilt a power hacksaw I got at the scrap yard (a chinese knock-off,
not an antique). I cleaned the parts really well, sanded them and used
Armor-Coat rust paint. It looks pretty good and I have good luck with
this paint as regards durability, I use it for everything in my shop.

You can see the final results under junkyard power hacksaw at
www.geocities.com/mtlwright

Regards,

Bill

[Vince Iorio]

I recommend a urethane modified enamel paint. It's easier to use then
epoxy, and stands up very well to oil.

I have also had castings dipped & clean at an engine rebuilders. I
thought the metal was exceptionally clean afterwards and I had no
problem with paint sticking. I do recommend sand blasting for
"cleaning". Our painting expert at work said it causes more problems if
the surface is not clean to begin with, though it does help in the long
run if the surface is clean.

Vince