Large Scale Central

The mine

Dave Taylor said:

WOW I just figured the price for Rainbow Ridge Kits Corrugated Roofing. 20 pieces for $15.00 +S&H.

That works out to $27.00 per Sq, Ft. + S&H. I guess that I’ll have to make my own press for the amount that I need.

Yes, not cheap at all. They are rather heavy and stiff, though. Neat pieces with the actual look of galvanized steel.

Bob, Got any pictures of the crimper that Yogi made? I think that I would like the challenge to turn up a couple set of dies for roofing.

Who’s the fella that used to be on LSC who has a neat crimper? I think is name was Larry Mosher. I can’t remember for sure. I do rememebr several years ago I bought a package of roofing from him.

Dave,

Though not like Yogi’s roller setup here are a couple of press dies that I built from hardwood a number of years ago… Using beverage can metal works very well.

The press on the right is for 1:20 and the one on the left is 1:24. The 1:20 scale makes corrugated sheets 26 inches wide by up to 12 foot long.

I cut the sheets to size then lay them in the press, paint side down, put a protective block of wood on top and smack it with a hammer.

Some “can sheets” sprayed with “cold galvanizing” spray paint.

I have made quite a lot of roofing and the press is still in good shape but for production a guy would want one made from steel and probably a lever or even hydraulic operation. using a steel press it would be pretty inexpensive to buy and use 30 gauge strip pre-cut to width.

Later

Rick

I wish I had the tools to make a press like that. I’ve been using a paper crimper, and it’s ok but the corrugations are really oversized for 1/24th scale.

Rick, what’s this “cold galvanizing” spray paint you mentioned? I’ve never seen it…but it sure sounds interesting.

Ray,

All it takes is a table saw.

Bruce,

Cold Gal is a zinc rich spray paint used to protect bare metal. We used it by the truckload in the sheet metal shop to overs pray spotwelds and/or solder joints where the zinc had been burnt away.

If it works here is a link.

http://www.rustoleum.com/en/product-catalog/consumer-brands/stops-rust/cold-galvanizing-compound-spray

Try your local Lowes or Home Depot, Bruce. I know Lowes carries it.

Bruce

I have used CRC brand with good luck, I got it at napa autoparts

Richard

In the UK and I would be pretty sure that something very similar exists in the USA, is a domestic quality outdoor paint specifically for metals and rust inhibition. The UK name is “Hammerite” and comes in two versions - smooth or hammered. Its principal use, for me, is my metal garden furniture which takes the aluminun/silver color, I also use the black color for ornamental railings and gates. There is a limited color range, but the smaller quantities available are also suitable for some modeling purposes.

But I’m trying to make my Aluminum roofing look rusty.

I’ve had OK results by cleaning the heck out of it with acetone, then spraying

red primer. It’s held up reasonably well, with a little peeling hear and there.

Raw aluminum should be zinc chromated before applying the top coat, be it

primer or color. But I can’t find it in spray cans. (Maybe I didn’t look hard enough.)

Use to buy a product at Michaels that was a two part set, Use for all types of materials and it turns things to a rusty look. Will hold up well out doors. Later RJD

I use Rust-oleum Cold Galvanizing Compound that our Lowes used to handle. When they quit handling it I switched to Ace Hardware where it was easy to order. I got it in less than two weeks and it was no more expensive than Lowes.

I discovered that you may have to search a little to find it, because they don’t always stock it with the regular spray paints. Sometimes the cold galvanizing compound is sold next to the heating and air-conditioning ducts, or with rain gutters, or chain link fencing.

John Bouck said:

But I’m trying to make my Aluminum roofing look rusty.

I’ve had OK results by cleaning the heck out of it with acetone, then spraying

red primer. It’s held up reasonably well, with a little peeling hear and there.

Raw aluminum should be zinc chromated before applying the top coat, be it

primer or color. But I can’t find it in spray cans. (Maybe I didn’t look hard enough.)

John,

Go for real rust!

I used Sophisticated Finishes Iron Metallic Surfacer, followed by the Rust Antiquing Solution to get the rusty effect. You can vary the effect by putting on more or less of the Solution. These surfacers are made for outside and hold up very well over the years.

(http://www.jbrr.com/Pics/Structures/Coaling/IMG_0792.JPG)

Thanks, Bruce. I’ll look into that.

Also try local marine supply stores for cold galvanizing products. I get mine at West Marine (southeast).

See the book Building Structures for your Garden Railway by Jack Verducci for details of making a corrugated roofing sheet press.

Worked a little on the south facing side today.

It’s a shame to put that outside…it should be in a museum.