Jump to content

Fun wit Hot metal


Patrick Hand

Recommended Posts

In the Documentation thread, michaelsbagley posted this cool trick about using lead free solder for casting stuff....

Now here's the funny thing... Modern lead-free pewter is made of the following...

~85 to 90% tin

~2% copper

with the remaining balance being made from Antimony or Bismuth.

If you look at the make up of hardware store plumbing solder you will find it is made from

~70 to 90% tin

~2% copper

with the balance made up from Antimony or Bismuth (or occassionally other substitutes, but not often)

You can go the the Documentation thread to read his full post.......

I figure instead of keeping the discussion about casting stuff hidden in that thread, I'd start a new one.....

I wanted to make a mold and cast some pewter buttons. I have some soapstone, so I used that.

OK this try didn't quite work.... the solder worked, it's just that I now have a better idea about how I have to make the soapstone mold...

I started a charcoal fire in the bar-b-que, and used an old stainless tablespoon to melt the solder in.... that part worked....

I know that the mold has to get warmed-up first, so I wasn't concerned about the first cast.

I discovered that the shank of the button has to be carved a little larger, and that a one part mold isn't the bast way to make buttons.

Where the solder was in contact with the mold, it comes out nice and crisp... but the buttons came out too thick....

So it's back to th' Ol' Drawing board and re-carve the mold....

Hey.... it's a learning experience..... I now know what I did wrong, and can fix it.......

Then I can see what happens if I use Sculpie when I cast a sealing wax ....seal....... :P

Link to comment
Share on other sites

Most of the 17th/18th century buttons I have came from a two part mold. There is usually a seam on the back side of the button...

I wish Pat would post pictures, it seems like a neat project!

GoF

Come aboard my pirate re-enacting site

http://www.gentlemenoffortune.com/

Where you will find lots of information on building your authentic Pirate Impression!

Link to comment
Share on other sites

What kind of plaster? I made some medallions a few years back using plaster paris, and the results were unpredictable. It took a lot of molds and tries to get one or two good quality medallions. The molds themselves were prone to breaking all too easily. And they seemed to hold moisture no matter how long I left them in the oven.

I AM BILGEMUNKY

Link to comment
Share on other sites

Hehehe good idea lass........

Patrick ha'e ye ever tried ceramic moulds????..............tried casting copper and silver in some i made. Just a wee thought and me twa bits worth.

Salty

Mud Slinging Pyromanic , Errrrrr Ship's Potter at ye service

Vagabond's Rogue Potter Wench

First Mate of the Fairge Iolaire

Me weapons o choice be lots o mud, sharp pointy sticks, an string

Link to comment
Share on other sites

The batterys for the camera are kinda old, and don't hold a charge.....

So I couldn't take a picture this morning..... I should be able to take one tomarrow.... after the batterys re-charge......

I used soapstone, because I know it can stand the heat....

And I think I have figured out exactly how I want to make a two-part soapstone mold.....

Link to comment
Share on other sites

WOH... COOL..... A two part mold is the way to go..........

I'll have to post pictures tomarrow when the batterys are re-charged, but I made a two part mold outta soapstone..... it took about two hours, and I have some fine tuning to do..... But it works !.....

The sprue is a little large, I thought the soldier was solidifing befor it got into the mold..... and I've discovered that you really do have to cast a few to heat-up the mold to get them to cast right...... well... I kinda knew that..... from casting bullets.....

And I have to do a little more carving to get it exactly right.... I slightly messed-up and made the back part a hair larger.... but it's just like carving off a heavy mold line, so I can live with that........

Fine tune to mold tomarrow when I have good light, then cast up enough for my new light weight jacket...... cool.......

Dang.... this is so much fun, I might make another mold for small flat faced buttons.......... (for on slops and such....)

Link to comment
Share on other sites

Here are the pictures as promised.....

..........Mold-1.jpg

This is the one piece mold... Like I said, it dosen't work very well, the solder fills the mold, but it is too rough on the front, It works if I file or grind it, but thats too much work.....

.........Mold-2.jpg

This is the two-part mold, and it works much better. The button at the top was befor the mold got hot enough, so it's not as smooth as the next one.

I made a slight mistake on the back, and it's 1/16" inch larger than the front, so it acts like a large casting line, but I can quickly file that off.

Also, the back is slightly deeper at the edges, so when the button is cast it is slightly concave.

This morning, I trimmed the dome part so the line on the inside of the ring wont be as thick.

Link to comment
Share on other sites

I wish Pat would post pictures, it seems like a neat project!

Actually what Pat needs is someone to follow him around all the time and document all of his cool projects...

I would volunteer in a heartbeat! I love reading of Patrick's projects and experiments.

How did you LEARN all this stuff?! So in awe . . . B)

Avast, ye scurvy dog!

Link to comment
Share on other sites

How did you LEARN all this stuff?!

Librarys and Used Bookstores are my friends...... B)

Craft books are great, it's just the projects in them are sorta lame, so I use the information, modify and experiment with it......

If you want a belt or knife sheath for your Pyrate stuff, a book on leather work will give you the information to make it yourself....

Same with sewing, or metal work/jewlery.... Almost anything you could want to know.....

Books on other periods are also a great source of information....

Sketchbook 76 is after the GAoP, but it has a pattern for making a shirt, and if you change the fly on the breaches (and make them longer and looser) you have slops....

The Book of Buckskinning series has a lot of information on good stuff also....

You just have to read other books, to learn what information is period, and what is to late, but the How-to information is all very usefull......

Link to comment
Share on other sites

FYI.... Sculpie dosen't work ..... B)

I figured it would only have to last long enough for one cast..... but the hot metal hits it, and burns it right up.....turned it into a nice rubbery, burned-up mess....... The three layers of paper held, but the inside two were compleatly scorched to ash...... I wraped the paper with metal furnace tape, and I think thats the only thing that keep the experiment from getting colorfull..... B)

Guess I'll have to make the mold outta soapstone, and heavyer paper next time.......

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...
&ev=PageView&cd%5Bitem_id%5D=11712&cd%5Bitem_name%5D=Fun+wit+Hot+metal&cd%5Bitem_type%5D=topic&cd%5Bcategory_name%5D=Thieves Market"/>