in my photo album I have pictures of a lost foam part done using cnc. http://groups.yahoo.com/group/hobbicast/photos/album/1205431571/pic/list the finished...
39628
Lyle
creepinogie
May 25, 2009 11:55 pm
Looks good Dave. Nice to see some real pictures....
39629
Lance
crashbone123
May 26, 2009 12:57 am
Group, Has anyone built or used a Babington ball burner to melt their metals? It's a waste oil burner with no nozzle to clog. If yes, what was/is your...
39630
Rupert
rwenig1
May 26, 2009 3:47 am
Hello Group, Just thought I'd post a picture of a casting I made today. <http://www.pacificsun.ca/metal.pics/gear.jpg> I was making some cores so I used my...
39631
Rupert
rwenig1
May 26, 2009 3:54 am
Hello Guys, I believe some of you have dabbles in investment casting. I have a couple I'm trying to do. They are quuite large as they are castings for a 1/3...
39632
kafoom
May 26, 2009 7:35 pm
Group, I intended on setting up something like a Dasifier (gasifier) on this thing to run it for recycling aluminum but have other priorities now. It has to...
39633
kafoom
May 26, 2009 7:35 pm
Group, I intended on setting up something like a Dasifier (gasifier) on this thing to run it for recycling aluminum but have other priorities now. It has to...
39634
hobbicast@yahoogroups...
May 27, 2009 3:11 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the hobbicast group. File : /Lyle's...
39635
Rupert
rwenig1
May 27, 2009 5:06 pm
Hello Lyle, The valve covers are nice. Did you mold them in petrobond? Or? Rupert ... -- yvt Rupert Wenig Camrose, Alberta, Canada. email: rwenig2@......
39636
Lyle
creepinogie
May 27, 2009 5:33 pm
Yeah I did. Loose patterns made from wood. It was actually more hard (for me) to figure out the pattern for the mill/drill fixture for them. It seems easy now...
39637
steven.squier@...
steven.squie...
May 27, 2009 8:06 pm
Hello I'm new here, from just North of Houston in the small town of Cleveland. I hate to bring up a subject that has been nearly exausted recently- but I have...
39638
Dennis Cranston
dennisintexas41
May 27, 2009 8:29 pm
Steve Why don't you bring a sample of the sand & the resulting casting to the next meeting of the Home Metal Shop Club of Houston? We have several active metal...
39639
Rupert
rwenig1
May 27, 2009 10:39 pm
Hello Steve, Can't help you on the "moon sand" as I haven't seen it. Are you asking for the right thing when you asked for bentonite at the feed stores? A...
39640
bold gregory
gregsfoundry
May 27, 2009 10:42 pm
Hi Rupert Ive done a few investment castings..mostly for my sculptures. I burn out the wax at 700 degrees celsius...for 24 hours. This is what I was taught by...
39641
Gary Lekvold
scobeyguy
May 28, 2009 4:10 am
Hi Rupert, I meant to reply several days ago but I couldn't find my instruction sheet. I have done investment casting for about thirty years. I always used...
39642
Rupert
rwenig1
May 28, 2009 3:19 pm
Thanks Greg. Another question has risen. How does the size of the investment (by wt.) affect the burnout time? Rupert ... -- yvt Rupert Wenig Camrose, Alberta,...
39643
graham_h_miller
May 28, 2009 5:41 pm
Hi Another daft question! I picked up a funky 70's style glass saucepan in a charity shop today. Would it work as a crucible for aluminium? Or would something...
39644
jbrennan3@...
caster4245
May 28, 2009 6:25 pm
don't do it !! you don't want to find out. jesse...
39645
postello@...
dpostellon
May 29, 2009 12:34 am
I agree, but wasn't there some ad about this in the '60's?, maybe pyrex? ... something...
39646
postello@...
dpostellon
May 29, 2009 1:18 am
Doing some quick checking, you could probably do Zamac, if it is pyrex. I don't think I would attempt anything with a higher melting point. ... pyrex?...
39647
jbrennan3@...
caster4245
May 29, 2009 1:35 am
I used a pyrex (borosilicate glass) one as a see thru cover for a glass enameling kiln. it worked for a while until it blew up into the literal thousand...
39648
Jeshua Lacock
jeshua_lacock
May 29, 2009 2:15 am
... What you needed is a sapphire window: http://www.newport.com/Sapphire-Windows/378626/1033/catalog.aspx Best, Jeshua Lacock, Owner <http://OpenOSX.com> ...
39649
Jeshua Lacock
jeshua_lacock
May 29, 2009 2:26 am
... Actually here is a much more reasonable price (actually affordable for the home shop): http://tinyurl.com/lpdavg Cheers, Jeshua Lacock, Owner ...
39650
David Patterson
odd_kins
May 29, 2009 4:30 am
I used a pyrex storage dish for low temp metal (you can melt it with a match) it worked until i tried to pour lead into it. split into about 20 pieces. Dave...
39651
graham_h_miller
May 29, 2009 9:05 am
So, it might shatter and spray a mixture of glass shards and molten metal everywhere? I think I'll keep it in the kitchen and use it for heating up baked beans...
39652
Stone Tool
owly055
May 29, 2009 11:51 am
While pouring molten metal into glass is a bit foolish..... the "shatter and spray" event sounds like a highly improbable fantasy scenario. There is no energy...
39653
Lyle
creepinogie
May 29, 2009 12:43 pm
We use a Pyrex glass pan for microwaving sand and soil samples to get the moisture content. You can melt a Pyrex pan in a microwave doing this if your not...
39654
William Abernathy
Yahuselah
May 29, 2009 4:43 pm
I've seen Pyrex let go with some vigor. The specific instance was one of those casserole dishes (y'know, the kind marked "NOT FOR STOVETOP USE") used on a ...
39655
Scott Trostel
blwloco
May 29, 2009 5:30 pm
I spent 17 years as a camera repairman, and one of the things I used to replace was the heat absorbing lens in Carousel projectors. That glass lens was under...
39656
Dave
drescher3
May 30, 2009 12:13 am
My sister in law melted our glass microwave tray...she was trying to use the timer, but the oven was turned on and it over heated some random scrap of food or...
