any of you cast stainless, what temp required pat...
35175
Rick Rowlands
ytownsteelman
Sep 6, 2005 8:36 pm
We pour stainless at 2900 F to 2950 F. Anything less and you risk cold laps and ladle freezups. Rick ... From: "pat176_6" <goldenvirginia@...> To:...
35176
lcdpublishing
Sep 8, 2005 12:17 am
Hi all, I am a machinist and I have plenty of years of metal working under my belt. Now I am tinkering with casting of sorts. The metal I want to cast is...
35177
Raymond Heckert
samnjanet
Sep 8, 2005 2:55 am
Don't use lead or lead based alloys. The surface tension is too high to do fine detail work. I read an article some time ago, that someone made a 'lost...
35178
Rupert Wenig
rwenig1
Sep 8, 2005 3:13 am
Hello Chris, Two ideas come to mind. Not sure if either is good. You can decide. One is to machine both the cope and drag parts of the mold out of aluminum (or...
35179
lcdpublishing
Sep 8, 2005 2:48 pm
Hi Rupert, Thanks for the information but I am hoping there is a simpler method. If you don't mind, please read through my reply to the other fellow in the...
35180
lcdpublishing
Sep 8, 2005 2:48 pm
Hi Ray, The solder I was planning on using is the high silver content stuff (I believe it may be called bearing silver). Essentially, it is the newer solders...
35181
Rupert Wenig
rwenig1
Sep 8, 2005 5:11 pm
Hello Chris, I get it now. I think it might work specially since you can machine the flash and any excess metal away. Try pouring over the whole mold starting...
35182
wrpa
rudy_216
Sep 9, 2005 2:17 am
Hi Chris, Just a thought. How about using solder paste and covering the mould. Then use a card as a squeegee and scrape off the surface leaving only the solder...
35183
lcdpublishing
Sep 9, 2005 3:48 am
Thanks for the links, made for a good read. Any suggestions as to what I could use for the mold material? I would like to use something that I can simply...
35184
Col Croucher
colincroucher
Sep 9, 2005 4:42 am
Hi Hobbi Casters. The September issue of the Hot Metal Ezine is about to hit the streets as they say. Here's three of the topics covered in the ezine that may...
35185
dano9672
Sep 9, 2005 2:09 pm
Since you are going to machine off the excess and embed it anyway, and the lacework is so fine, have you considered bonding a thin metal sheet to your...
35186
Chris Bailey
cbailey73160
Sep 9, 2005 2:09 pm
It'll depend on the actual melting point of your metal. Solder (60% Tin / 40% Lead) melts at about 450 degrees. If your stuff melts past 550, then you may...
35187
Daniel C Postellon
dpostellon
Sep 9, 2005 2:15 pm
... Can you force it in someway? Maybe you can engrave the bottom of the mold with your design and a small reservoir for molten metal, then have a flat top of...
35188
lcdpublishing
Sep 9, 2005 6:25 pm
I will do some tests this weekend to see if I can determine the temp of the metal in it's liquid form. As it is more silver than lead, I suspect that it is...
35189
lcdpublishing
Sep 9, 2005 6:25 pm
Wow, Another interesting twist in the process. This could actually be done pretty easily with what I have in mind. It really wouldn't take much to make a...
35190
lcdpublishing
Sep 9, 2005 6:25 pm
I believe the thickness I need is going to make chemical etching (chemical machining) prohibitive. But it certainly is something I need to noodle on though -...
35191
Daniel C Postellon
dpostellon
Sep 9, 2005 7:50 pm
I was thinking of something like a waffle iron, with molten metal instead of waffle batter, and one side flat, instead of patterned. It must have been close...
35192
lcdpublishing
Sep 9, 2005 9:20 pm
Waffle iron, I like that comparitive! I wasn't thinking of your concept exactly that way, but I got a better picture now. I am also having a craving for...
35193
Daniel C. Postellon
dpostellon
Sep 10, 2005 12:22 am
Google "squeeze casting" to find some nice descriptions, some with good line illustrations of the process. This might be the process you want. ... From:...
35194
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sabertooth7x6
Sep 10, 2005 2:06 pm
Speaking as some one who has cast lead into sinkers it sounds like you might want aluminum blocks. you can easily mill your patterns into them heat them enough...
35195
Geoff Nelson
gjn_za
Sep 10, 2005 7:54 pm
Hello I have seen an old graphite crucible at a local scrap yard. Way too big for my purposes. However I was wondering if it would be possible to grind it up...
35196
dan Brewer
danqualman
Sep 10, 2005 11:28 pm
Buy new Http://www.lagraphite.com Get the size you need. Molten metal is not something you what dribbling down your leg. Dan in Auburn ... From:...
35197
Leon Risenhoover
lrisenhoover
Sep 11, 2005 3:07 am
I agree I give quite a bit more, $60 for mine. think of it this way buy good tools and you won't bang your knuckles ... From: "dan Brewer"...
35198
sandesondavis
sandersondavis
Sep 11, 2005 5:50 am
It looks like LA Graphite is getting out of the crucible business. Check the web site for details. --Sandy ... -- No virus found in this outgoing message. ...
35199
John
jwb38_1999
Sep 11, 2005 5:04 pm
For the last week I have been trying to cast some simple items using the cavity method of casting. In the past I have done some lost foam castings but was...
35200
Geoff Nelson
gjn_za
Sep 12, 2005 7:26 am
Hi Dan I wold consider that but for the problem of living in South Africa. They are a little far away and this makes things a little difficult. Also far better...
35201
Lyle
creepinogie
Sep 12, 2005 1:05 pm
Could be: cope not deep enough (3 1/2" min. unless really small flask) incorrect amount of bentonite or water. inside of cope is painted which helps the sand...
35202
dan Brewer
danqualman
Sep 12, 2005 1:09 pm
For AL I would look at stainless steel containers. Here the original purpose ranges from a measuring cup to a martini shaker. Be aware that they do wear out....
35203
Daniel C Postellon
dpostellon
Sep 12, 2005 1:26 pm
Actualy, I would go for cast iron pots for a crucible for aluminum. They still dissolve, but are much thicker, and therefore take a longer time to wear out....
