http://www.lmine.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=LMS&Category_Code=fused  Howard:Seems like a lot of work to save $11.99 plus shipping. The fused...
42579
StoneTool
owly055
Feb 18, 2013 7:20 pm
You're right Carl............ I have a fairly large furnace, and melting a tiny quantity of bronze in it seems a bit silly...Crucibles are cheap enough, tongs...
42580
Stephen Lovely
rhodes_shaper
Feb 19, 2013 12:43 am
I did a small investment casting a couple years ago where I melted some pennies in a small porcelain crucible using an everyday propane torch. I just weighed...
42581
Pierre Coueffin
darkblood_
Feb 19, 2013 1:44 am
When I need to make a stage prop that looks like brass, but cannot be for reasons of cost or weight, I use steel and good quality spray paint. [Non-text...
42582
Inventor
welfab
Feb 19, 2013 1:46 am
You might want to check with your local foundries to see how "Alum-Bronze" is made. Makes beautiful golden casting. Grandpa Bill...
42583
StoneTool
owly055
Feb 19, 2013 4:02 pm
Interesting....... I never thought about using pennies...........I actually didn't realize that they were zinc until a few years ago. Zamak 3 could be used...
42584
Lyle
creepinogie
Feb 19, 2013 4:42 pm
If I can't find mag. bronze which is a yellow color, then I use silicon bronze which you can buy at most metal suppliers and add up to 30% zinc to get a yellow...
42585
Nelson Collar
nel2lar
Feb 19, 2013 5:02 pm
Lyle Do not try to melt magnesium, it has a very low burning temp and once burning there is no way to put it out except taking its oxygen away. I would not...
42586
Lyle
creepinogie
Feb 19, 2013 5:11 pm
Nelson, I melt 420 series mag bronze, not magnesium. I've had a few bad experiences in my foundry but not that one.... Mag bronze is, for me anyway, the best...
42587
Carl
carl_r2000
Feb 19, 2013 5:48 pm
http://castboolits.gunloads.com/showthread.php?66241-Melting-points-of-Lead-and-Alloys  There is a chart here that shows the melting points of copper zinc...
42588
phil
philwhitley73
Feb 19, 2013 6:03 pm
Gentlemen, There is a metal called "pinchbeck" which is a brass that was developed to look just like gold. I have looked but cannot find the proportions of...
42589
Carl
carl_r2000
Feb 19, 2013 6:20 pm
It is real hard to tell magnesium from aluminum. It is a little lighter but most of the scrap buyers think it is aluminum. The turnings catch fire very easy....
42590
Dick Morris
rmorris200
Feb 19, 2013 6:33 pm
It's been several years since I read about it, but my recollection is that tin or lead in very small quantities can cause corrosion cracking in zinc alloys. ...
42591
Kerri Duncan
silverforges...
Feb 19, 2013 6:56 pm
Carl- simple test for Mg- scuff an area bright with some sandpaper and put a drop of distilled vinegar on it- if it fizzes- its Mg. Â ... From: Carl...
42592
Rupert
rwenig2
Feb 19, 2013 8:41 pm
Regular household white vinegar works fine too. You don't need distilled vinegar. Rupert ... -- yvt Rupert Wenig Camrose, Alberta, Canada. email:...
42593
Lyle
creepinogie
Feb 19, 2013 9:59 pm
Or if it says Volkswagen or Lawnboy on the casting.......
42594
StoneTool
owly055
Feb 20, 2013 1:42 am
Years ago I wanted to break off a VW transaxle so I could use the bell to bolt a starter to VW engines to start them on the floor. I decided to simply hit it...
42595
StoneTool
owly055
Feb 20, 2013 1:46 am
Won't zinc do the same thing?...
42596
Steven DePhillips
stevendeph
Feb 20, 2013 4:41 am
When i was a kid I worked in a machine shop were the old machinists used to tell machine shop horror stories and one of them was about a guy who after...
42597
mikey98118
Feb 20, 2013 5:41 pm
I beg to differ; that was just typical shop humor (ex. "merry-go-round:). Machinist h-o-r-r-o-r stories all have to do with finding a mistake in a barrel full...
42598
mikey98118
Feb 20, 2013 5:52 pm
Try looking here: http://en.wikipedia.org/wiki/Pinchbeck_(alloy) ... From: phil <phil.hermetic@...> To: hobbicast@yahoogroups.com Sent: Tue, 19 Feb...
42599
Wonk
tiwonk
Feb 20, 2013 7:20 pm
I prefere Melrin's Gold or Aztec Gold as a substitute and have been very succesful casting it! Wonk...
42600
Wonk
tiwonk
Feb 20, 2013 7:38 pm
Here is some examples of Merlin's gold. ...
42601
dpostellon
Feb 20, 2013 8:09 pm
The "purple gold" intermetallic was first described as an undesirable purple dicoloration on printed circuits. Pure crystals were made in South Africa as a...
42602
phil
philwhitley73
Feb 20, 2013 9:43 pm
Yes, I found that, what I was looking for was some indication of the amounts of each metal to use to get the right colour. I suppose it is still a secret! ...
42603
David Knaack
davek4096
Feb 20, 2013 10:00 pm
Here are a few references. "one part of zinc with five or six parts of copper- ; [...] Some metallurgists, however, direct equal parts to be melted together ;...
42604
phil
philwhitley73
Feb 21, 2013 2:49 pm
Well done David, that is what is needed! ... From: "David Knaack" <davidknaack@...> To: <hobbicast@yahoogroups.com> Sent: Wednesday, February 20, 2013...
42605
StoneTool
owly055
Feb 21, 2013 4:14 pm
It's clear that a yellow or coppery colored metal that has a low melt point is not going to be found. The percentages of copper virtually guarantee that the...
42606
Carl
carl_r2000
Feb 21, 2013 4:56 pm
Howard:Not if you believe Dr, Lewis: "Dr. Lewis observes, from his own experiments, that pinchbeck bears a greater  resemblance to gold, by employing zinc...
42607
Wonk
tiwonk
Feb 21, 2013 5:25 pm
Howard, Yes the temp of melting does exceed the thought of melting below aluminum but the copper is disolved into the lower temp zinc so doesn't require too...
