The Hot Metal Ezine.
The International Hobby Metal Casting ezine.
Brought To You By: Col Croucher.
Administrator of: www.myhomefoundry.com Australia.
 
  November 2007. |  Volume# 5  |  Edition# 49. 
Hello Fellow Metal Caster.

I'm writing this ezine to you on Tuesday 6th November, the day on which the greatest horse race in Australia is run.... and If you don’t know which race that is, it is called the Melbourne Cup. The cup as it is called, has been running now for about 148 years, many international horse owners bring their mighty steeds out here every year to try to win the coveted Melbourne cup, at times they succeed, but they have a tough time beating the Aussie & NZ horses... I really should be out enjoying myself today along with all the other hopeful punters at the local race meeting, but I'm afraid that aint possible, as I have an ezine to get out and work comes first, and besides we are running a bit late, just like the horse that came last in the cup.

So here we are, typing away furiously on the key board and getting know where fast, well, you know how it is, when you learn things a bit later in life you don’t exactly have that zing you had when you were bit younger... you'd know what I mean wouldn't you.

How has the last month been for you? I hope all of your plans and projects have been successful, and you are happy with the results. 

Every now and again I check back through emails that have arrived at our inbox from existing customers, potential customers and sometimes from people who may have a request or want a problem solved, they make for interesting reading.... here's a sample of some of them... no full names attached of course, for privacy reasons.

**********
Message: 25-05-07
Hi Col, spotted your website while surfing for pattern making info. I've become involved in a restoration project through my day job - I'm a motorcycle magazine editor/journalist - and I have been asked to produce a pattern for a rare part to be cast in iron. I'm a qualified carpenter and joiner, having served a four-year traditional apprenticeship in the UK, so handling or access to tools is no problem, what I'm needing to find out is shrinkage rates and where to find a pattern maker's rule graded for working in iron.
Does your book contain this information?
Thanks.
Tim.
UK.

>> Naturally we got back to Tim with the relevant info and suggestions where to obtain a pattern makers (Shrink) rule.

**********

Message: 31-05-07.
Hello Col I have lost that list of foundry suppliers in Australia that you produced and want to look some of them up when I am in Brisbane next week. Is it possible to get another copy emailed to me?
Cheers
Greg R.
Australia.

>> The Australian foundry supply book was forwarded onto Greg.

**********

Message: 16-06-07
Hi
A long time ago I purchased "Three Volume Metal Casting Made Easy ebook". Now, I see you have new ebooks as bonus for new customers. Please, let me know how can I get this new material, ok?

Best regards
O.M'd Rs.
Brazil.
>> An update was quickly organised.

**********

Message: 25-06-07
Hi Col,
I have made my mind up to buy your e-book package. I am not sure if it will be possible to download it over my private landline. I am sure that I have read somewhere on your site that it will be to slow. Do you recommend that I get the cd or can we give the download a try? I am not going to start with the casting hobby right away due to other projects that I am currently busy with. Will only start in the New Year. I managed to get the money together and before it goes to something else I might as well invest & start learning about this hobby now. Please let me know so that I can still use your 48 hr offer.
Kind regards

Johan
South Africa.

>> Johan's request was granted and he was able to purchase and download his package.

**********

Message: 28-06-07
Dear Sir,
I inadvertently clicked the wrong link. I purchased the CD rather than the download.
Is there some way I can download? The only problem with instant gratification is it takes too long!
Respectfully,
Brady.

>> A momentary glitch, but we soon had Brady downloading his ebooks.

**********

Message: 19-07-07
First off, I want to thank you for the effort that you put into the site.  You provide information that is beneficial to many people. I placed an order, and sent payment on 6/26/07 for an order that was to be shipped to Michigan.  I was wondering when I should realistically expect to see the CD arrive, and if there were a tracking number assigned that would help in that regard.

Thanks
D.
>> International postage has been known to be really slow for whatever reason,
unfortunately we have also had CD's just vanish in the post, so replacments have been sent to customers from time to time..... And thank you for your words of support, we try to do our best.

***********

What we are pointing out here is, that even if you have the slightest problem with something please contact us. We had an email from one good customer who had paid for the ebook package but waited for about two months before making contact to see where his ebooks were... in the end, it was all an honest over sight, he did not realize that at the time when purchasing through pay pal he had to click on the "return to merchant" button, but now we have the IPN switched to auto-return so that after your payment  has been made, you will be taken automaticaly to the download page.... And if it does not work for you... pleeeeese contact us as soon as you can, we are not magicians, if things go wrong with a download we wont know about it if you dont let us know, and most of all please be patient, some technical glitches do take a while to sort out, but mostly things run pretty smoothly.

So yes, there has been plenty to do, & lots of projects on the go of which you will see below. There is also another success metal casting article for you to read, but there are no pictures to accompany the text, so you might have to visualise things as you read, if you a are a shooter you'll be interested in this.

You still with me... good, let's get on with it then.

Metal casting is a journey of true discovery, some people just want to make simple items, other's want to make their own vintage Car-Truck or Motorcycle parts.

Some people are happy to just make something simple like an ingot....But, no matter what your aim is, we can help kickstart your journey.

  Are you ready to give metal casting a go?

Then: click here right now to grab your hobby foundry ebook package.

  If you have already done that, perhaps you might like to explore:

Medallions & Emblems.

Or
Unravel the art of pattern making.

Create some:
Decorative Metal Work.

And:
Build A Set Of Metal Rollers.

There's something for everyone at:
myhomefoundry.com
&
Much More to Come.



            Resin Repro Name Plates.
           MDF-Pattern

Picture shows MDF pattern
relief which has been routed out to depth of resin name plate, yes, the routing job is a little untidy, but the gaps will be filled in after name plate is glued in place.                 
    


         embedded-resin-name-plate
                 Name plates glued in place

   
         embedded-resin-name-plate
Gaps around the edge have been filled in but not yet sanded, after careful sanding the pattern and name plates are spray painted with grey auto primer, then rubbed back with steel wool for a nice smooth finish.  

            Reproduction Door Opening Handles.
             door-handles
The door handle project was a commissioned job from a customer restoring a vintage studebaker truck, extra handles were ordered to distribute to other Studebaker truck owners.         

          Reproduction window winder handles.
            window-winders
Like wise for the window winders, a small Qty production run was required, they were all cast in aluminium.The original handles were used as patterns. you might be wondering how the square hole was made in the handles?
A steel core was carefully made with a slight taper, the core was placed in the pattern during the ramming stage, and placed back in the sand mould before closing, the result, a very neat square hole.




Casting Bullets.
Here's a article for the shooters out there.

I first starting casting lead bullets a quite some time ago, probably in the mid 1970's.For years I was a keen Pistol and black powder shooter and other blokes at the gun club gave me advice on how to get started, which is one of the good things about belonging to a club. I would buy scrap lead from a local scrap metal dealer and I would mix it with solder
until I got a hardness that didn't cause lead to stick to the inside of the pistol barrel. I got the solder for nothing, as it was the floor sweepings from a rainwater tank manufacturing company that was part of a company I was working for at the time. I also experimented using lead wheel balancing weights and scrap lead.
br> When casting bullets, getting the lead temperature right was a bit of a hit or mix method to start with. If the cast bullet was wrinkled (The first few bullets where always wrinkled or miss-shaped until the bullet mould warmed up) I would turn the gas up a little until the casting was perfect. Later I bought an electric thermostatically controlled melting pot that you can buy at most gun shops. The bullets where cast a little larger than needed and where later resized and lubricated, I would use a RCBS lubrisizer, which is a hand-operated machine much like a reloading press that sizes and lubricates the bullet at the same time. Every thing needed (except for the lead/tin mixture) is available from gun shops.

You only use the lead/tin alloy mix when casting for a firearm using smokeless powder. Pure lead is used in black powder guns. Sorry, I don't have any photos to show you, and I don't know why bees wax works as an anti oxidant, if you can't get Bee’s wax, candle wax also works quite well. When my supply of free solder came to an end, I started buying the lead/tin blend from a solder maker, I just told him what I wanted and a few days later it was ready, still a lot cheaper than buying factory bullets and with less messing about.

To get started casting white metal bearings I first got some information from some hobby magazines I have that specialise in the restoration of antique oil engines. I also spent quite some time searching the Internet. Finally I bought a couple of books from Plough Books. To source the white metal I did a search of the white pages, I eventually found some, but it
is expensive.

I have cast many thousands of projectiles, (bullets). When casting bullets which are to be used for pistols using smokeless powder an alloy mixture of 10 parts lead to 1 part tin was used because pure Lead is too soft and it sticks to the barrel and is hard to clean. As more of the lead builds up in the barrel the less accurate the pistol becomes. A rifle or pistol
using black powder is ok with projectiles cast in pure lead,

Bullet casting is very easy but can become rather tedious. The equipment is pretty simple; all I used was an old saucepan to melt the lead which was placed over an LPG gas ring for heat, with a little practice the correct temp was easy to get right. To clean (deoxidise) the lead I would put a small knob of beeswax on the surface of the molten metal followed by a quick stir, and then skim the surface for impurities.

I would use a dipper to take the lead to the mould. The first few bullets cast would be wrinkled but as soon as the mould was hot you got a perfect bullet every time. It was a bit slower casting a projectile called a "Minnie Ball" which is not a ball but elongated like any projectile, you could only get single cavity mould as it has a hollow base.

I also cast white metal bearings for old engines, that is very much the same as long as all temperatures are correct. I use a 'casting thermometer’ that goes to 1000 degrees Fahrenheit, it has 6-inch stem so it goes into a fairly deep melting pot. They cost $60 or $70AU at gun shops that sell bullet-casting equipment. I still have not tried my hand at casting using your E-Book that I bought ages ago, I thought I would have plenty of time now that I am retired, I just seem to be as busy as ever.

Dave Hinves.
Australia.



Calling All Australian Hobby Metal Casters.

We have received a request from Stephen Davis from the Blue Mountains Region in NSW Australia. Stephen is keen to meet with other Aussie ezine subscribers & metal casters who live in the Sydney region, the idea is to arrange a casual meeting/get together to exchange ideas and metal casting experiences, as Stephen mentioned in his email to me "he does not know of any other metal casting people in or around his region". This would also go for many other hobby casters scattered around Australia, the vast distance between people is a bit of a handicap, but if there were a few within an hour or so of each other,  would make it easier to organise a weekend get togther. "So whadyareckon Aussie metal casters", wanna chew the fat with other like minded OZ metal casting blokes for a bit of a chin wag, melt and pour some metal, then settle back and crack a coupla tinnies? Flick an email to me and we'll put'yer in contact with your Aussie foundry mate Stephen.



Reproduction Of Resin Name Plates.

The photographs above illustrate a job which we mentioned in a previous ezine
edition, a qty of door handles and window winder handles were required, but included in the overall job was a heavy cast iron cover for a vintage winch for the old Studebaker truck. The winch cover and mechanism had the name of Heil Co. of Milwaukee USA.

The request was to make a reproduction winch cover, as it turned out this proved to be
a fairly difficult job due to the shape and nature of the original casting, a true repro item was out of the question, as the budget did not stretch that far.

So after a couple of phone calls with the client to discuss the options a decision was made to make a few changes to the design to keep the cost down, but aim to keep It as close to the original as possible, and a condition was to make an exact copy the name of the original to transfer on to the new repro casting.

So the thinking cap was put on to come up with a cheap & effective method to reproduce
the lettering and numerals from the original cast iron casting.

The materials used to reproduce the name were; plaster to make the impression from the original casting, bondo or kahfil (call it whatever you want) to create the nameplate,
both being pretty cheap and plentiful, you may remember, we have discussed the use of this car bog resin filler in our ebooks, this stuff has so many uses, you could fill a decent size book about it.

So after the resin repro plates were made from the plaster moulds and allowed to cure,
they were carefully sanded back to about 2mm thick. The lettering was cleaned up to
give a sharper definition, then the name plates were made ready to be glued into the relief in the MDF pattern (See photo above) which was free hand cut with a Makita router.

Unfortunately as the Nov ezine nears publication we don’t have a photograph of a finished winch housing casting to show you, we will have to hold that over for another edition, fingers crossed it will be a success.

As you could imagine it would be next to impossible to find pattern letters and numerals
to match the type & fonts used on the original pattern... Much quicker to just reproduce them and prepare the plates to fit the new MDF pattern.


Window Winder & Door Handles.


(See photo's above)
As luck had it, the client sent down one each of the originals required to be re made, the small production run of handles were cast in green sand, we simply used a small set of flasks which enabled two impressions per mould box to be made, the method used was to ram the drag up first then gently tap the orginal handle into the sand to half it's width, marks were made where ingates and risers were to go, parting dust applied, and the cope placed over the drag and then ramed up, a sprue & riser were inserted into the sand before the  sand was ramed.

The original castings were quite easy to use as patterns, and the shrinkage as it tuirned out was minimal. The job was alittle tedious to do but it was not long before the samll production run was completed, all that was needed then was to attend to the fettling and to semi clean the alloy castings on the linishing belt before sending them off to the client.

If you are into restoration of any sort which requires new metal parts tyo be cast, then you would be crazy not to begin to explore the art of metal casting, once you learn the methods & techniques, the amount of money that you will save on your projects will astound you, not to mention the personal rewards and satisfaction gained.

Some people say it is all too hard to learn, or it takes too much time to set up and build the equipment and tools..... but remember this, once you have built good quality tools and equipment, you will get years & years of use from it, your casting costs become minimal, it is really only your time and effort, and if you have been wise, your scrap metal cost should be almost zero also.... the only cost that you will have is the fuel cost for the furnace, I.E. LPG or propane if you use either if those fuels, and if you use old engine oil in your furnace then the melting cost is vitually zero, crikey, I can still remember the agricultural looking charcoal forge/furnace contraption I used when first starting out.... my only regret is that I never a took a photo of that old melter, it was almost embarassing at the time, but would be good to look back on now... just to show how humble it was back then. The journey has been incredible.   



Australian Cast Signs.
Ever wondered how to go about making cast aluminium name plates & signs?
This is something that many advanced hobby casters could have a go at, I know I have been tempted, the main problem is getting a decent collection of lettering and  numerals together, they are not cheap to obtain. If you have a few spare minutes, have a poke around the following web site, they don't give too much away, but you will know what's going on.

http://www.austcastsigns.com.au/sign_making_process.html
I have no financial connection with the above company, (Other than being an OZ company) Read below what they say on their web site.
"Australian Cast Signs are a quality handcrafted product that will add value and beauty to your home or business. Each sign is made to the individual requirements of our customer. You simply choose
the shape, colour, emblem and wording required, and we manufacture the sign to suit your needs".
What more could be said, a real true blue high quality Aussie product.


Fiftieth Ezine Edition Next Month.

We would like you to be featured in next months 50th Anniversary edition?

We want to make the December edition really special, if you have been busy in the foundry with some projects then we would truly like to hear from you, it is not difficult to put a short article together, (we will even help you) include some colour photographs with the article and you can be featured in our 50th Anniversary edition.


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