This is pneumatic pinch riveter seen in many workshops for locomotives and often used to rivet large boilers and steel structures.
I designed it in 1:20.3 scale and it is a quite beefy model. After sealing and priming the parts, I painted it in old school Floquil Roof Brown and the used the salt technique with Tamiya paints. Artists oils thinned with lighter fluid completed the weathering.

I still need to add the Bale, which is a U-shaped bar that the Riveter hangs from. I broke the first Bale and I ordered another Bale from Shapeways, which appears to be lost in Post Office limbo. The model is about 60mm tall.

That's really cool Michael. Nice job and it looks great.

Thanks,
Randy

Thank you.

The cast texture looks very realistic.

I created the cast texture by stippling on Gunze Mr. Surfacer with a brush.

That is a really well executed little piece! I love the fact that it is so obviously a very old and well-used tool, but the "jaws" (is that the right term?) show that it is still in regular use.

Thanks for sharing your process details here, I love it!

Cheers, D

You're welcome Michael. I love what you have done. I collect and use old tools and the finish on your project is spot on. Love it.

Randy

Thanks.
They are actually called “dies” and on the real riveter they were removable so different dies could be used for various sizes and shapes of rivets.

I offer this in two scales, 1:20.3 and 1:29 scale. I also have designed other large scale model railroad items as well as my usual 1:35 armor related items:
https://www.shapeways.com/shop/inventory" TARGET="_blank"> https://www.shapeways.com/shop/inventory

I got the replacement bale a while back but forgot to upload the images: