RUMCars Forum

General Category => Unusual Microcar Discussion => Topic started by: Mark Green on February 28, 2015, 12:24:10 AM

Title: Pewter Chroming
Post by: Mark Green on February 28, 2015, 12:24:10 AM
Does anyone know who might be able to chrome plate pewter in the UK? I am in the process of remaking the Frisky front badge and the people Grant uses says that they do not do pewter. I am trying to source a better price than I can offer here in the States since most of them will be shipped to the UK.
Title: Re: Pewter Chroming
Post by: Big Al on February 28, 2015, 07:53:32 AM
Pewter, I like pewter. But I prefer the old fashioned alloy to the modern shiny stuff. Seems an odd base for a badge. Is this used as you have a moulding tool that is not tough enough to be used with something harder, like copper or brass? No idea if pewter would chrome. It sounds unlikely but what do I know. It would silver.
Title: Re: Pewter Chroming
Post by: Mark Green on February 28, 2015, 12:39:42 PM
I have a plating company near me that can plate pewter so some of them can do this. What the difference is I do not know.

The reason I am using pewter is after some attempts with brass and bronze casting companies I received some ugly badges. I think the original badge was from a stamping and very thin. I did some research and found a silicone that withstands temps up to 575 degrees for use with casting pewter. I am amazed at how strong the badges are after casting thinking they might bend or break. The best part about using pewter is if the badge does not look good you just get the torch out and re-melt it back into the pot. Most of the time you will get 6 scrap ones to 1 good one.
Title: Re: Pewter Chroming
Post by: AndyL on February 28, 2015, 10:18:15 PM
The London Chroming Company come highly recommended.

If they can't do it, not sure who will.

They're not cheap, but the work is really good.

http://www.londonchroming.co.uk/

Title: Re: Pewter Chroming
Post by: Rusty Chrome (Malcolm Parker) on February 28, 2015, 11:53:15 PM
I did come across Caswell kits in the UK when I was researching plating. Again, not cheap, but they do offer a kit that says it can plate onto pewter as well as other metals. Might be worth thinking about if you've got other things that might need plating.

http://www.caswellplating.com/electroplating-anodizing/chrome-plating-kits/triple-chrome-plating-kits.html (http://www.caswellplating.com/electroplating-anodizing/chrome-plating-kits/triple-chrome-plating-kits.html)
Title: Re: Pewter Chroming
Post by: richard on March 01, 2015, 09:53:15 AM
Well I can get chrome on my com-pewter is that of any help at all ?
Title: Re: Pewter Chroming
Post by: Big Al on March 01, 2015, 10:10:19 AM
Is that the one with an LEAD screen?
Title: Re: Pewter Chroming
Post by: AndyL on March 01, 2015, 11:58:30 AM
You can only cast low melting point alloys into rubber tools.

if you want to cast in higher melting point metals I'd look at lost waxcasting. You could have them cast in aluminium or stainless steel and polish them. The rubber tools could be used to make green wax casts for the slip to surround.
Title: Re: Pewter Chroming
Post by: Big Al on March 01, 2015, 02:03:16 PM
Allowing for shrinkage. Was not going to mention casting as I assumed this was rejected for some reason.

If I had a non original Frisky I could have one made with a couple less gear cogs on the outside, proclaiming its faster speed. More a Rodeo than a Frisky, perhaps.
Title: Re: Pewter Chroming
Post by: AndyL on March 01, 2015, 03:12:18 PM
The lower the melting point, the lower the shrinkage, so pewter will have very little shrinkage.

Does it matter that much if a badge is 1 or 2% smaller? CAn't imagine anyone would notice the difference.

Title: Re: Pewter Chroming
Post by: Big Al on March 01, 2015, 04:14:43 PM
If I did it in a chrome-able casting, I would know. It made a difference to the Messerschmitt door handles, as they failed to work. Are you going to be happy supplying 'wrong' bits for money?
Title: Re: Pewter Chroming
Post by: richard on March 01, 2015, 05:35:07 PM
for my twopennuth it looks a lovely job , best of luck with them Mark
Title: Re: Pewter Chroming
Post by: AndyL on March 01, 2015, 05:47:04 PM
Clearly for something that has to function, then tolerances become more critical, but a badge just has to look right.
Title: Re: Pewter Chroming
Post by: Big Al on March 01, 2015, 06:41:49 PM
Think I will agree to differ on that one. I never see the point in going to a lot of trouble to do something incorrectly. I spent a lifetime slinging wrong bits 'that fit' from my good cars. Ultimately a built that fires still kills you.
Title: Re: Pewter Chroming
Post by: Mark Green on March 01, 2015, 06:53:45 PM
Last winter I tried a lost wax casting company to only have my original badge vacation in California for a couple of months. They where never able to get it made correct at a hefty price and I was lucky to get it back as that company was destroyed by fire. The winter before I sent to a foundry to try sand casting and they where very ugly. This year I decided to try pewter on my own. It as been a challenge but I am learning from my mistakes.When I start a project I try not to give up. I have been working on get a rubber gaiter made for the Friskysport also and finally have succeeded. This project has been going on for 2 1/2 years. I am lucky to have Frisky owners that understand that it takes time to make some of these replacement parts.

Title: Re: Pewter Chroming
Post by: richard on March 01, 2015, 06:57:07 PM
great stuff !! why on earth anyone feels like criticising is quite beyond me
Title: Re: Pewter Chroming
Post by: Big Al on March 01, 2015, 07:05:03 PM
Your not wrong about time taken making stuff. I have to laugh when you hear 'that will be easy to make. It very rarely is. Of course there is a big difference between low volume enthusiast made answers to parts and productionised answers to parts. This has to be recognised. 
Title: Re: Pewter Chroming
Post by: AndyL on March 01, 2015, 07:32:29 PM
Where is the criticism, or did I miss that?
Title: Re: Pewter Chroming
Post by: Mark Green on March 01, 2015, 08:38:17 PM
So correct Big Al, I am on the 4th mould for the chain case gaiter. I was lucky enough to find a company that the owner took time to help me design the last mould for the dipping process. Like I said before the Frisky owners understand the time it takes to make these parts.
Title: Re: Pewter Chroming
Post by: Big Al on March 01, 2015, 09:24:52 PM
That takes me back. I used to work, indeed first job, in a chemist suppliers. They held a patent on making pumice stone..... Anyway another thing they did was small mouldings. So once I had cracked my initial task as packer and mail out bod I began to run these automatic machines. I ended up running two injection moulders and one dipper, all automatic. So I would sorts a few parcels, run to the moulding room, check the machines and sort, run back and so on, all day. I bet the dip moulding is much the same process I was in charge of, though not quite as complex as that shown. The problem was that the material had to cure for some weeks before it was fully flexible. To early and fresh, it would shear across the stress points. Now that might be a materials issue. In Chemist products many things have a short life expectancy, as they are more expensive to clean, than replace with another sterile packed new one. So cost was important. Apparently it is the latex, or flexible element of these moulding rubbers, that is significantly more expensive than the bulk of the material. So there is an endless attempt to reduce the latex element to keep the cost down. Not alot of people know dat. 
Title: Re: Pewter Chroming
Post by: Mark Green on April 03, 2015, 10:54:57 PM
I have received my sample H&G badges back from having them chrome plated. Painted one with red medical grade epoxy paint. Now to let it cure and then ship to Mr. Meadows for the Frisky approval!!!
Title: Re: Pewter Chroming
Post by: richard on April 03, 2015, 10:57:32 PM
That really looks beautiful - well done !
Title: Re: Pewter Chroming
Post by: Rusty Chrome (Malcolm Parker) on April 04, 2015, 12:08:36 AM
Pewterful!
Title: Re: Pewter Chroming
Post by: Big Al on April 04, 2015, 08:21:58 AM
The badge collectors will be getting excited, too.
Title: Re: Pewter Chroming
Post by: Mark Green on July 22, 2015, 10:01:45 PM
Today I finished applying the red epoxy to the 24 Meadows H&G badges. Most likely the only time you will see this man together!
Title: Re: Pewter Chroming
Post by: richard on July 27, 2015, 04:46:21 PM
Y  ;D