Furnace for Metal Casting

Area for developing group projects, such as workshop equipment
Kory
Posts: 8
Joined: Wed Sep 01, 2010 4:42 pm

Furnace for Metal Casting

Postby Kory » Sat Sep 04, 2010 8:26 am

Hey Everyone,

I'd like to try my hand at metal casting. I've looked at a few designs for making a small furnace, and I'd be willing to make one for HF. I was thinking of something on this scale that could be wheeled outside:

http://www.backyardmetalcasting.com/hmkit.html

Give me some feedback on this proposal, and let me know if you have experience or want to help.

Kory

User avatar
bobble
Posts: 28
Joined: Sun Jul 26, 2009 4:27 pm

Re: Furnace for Metal Casting

Postby bobble » Sat Sep 04, 2010 9:08 am

i chronicled my misadventures with aluminum casting in this thread.

viewtopic.php?p=4681#p4681

made a cheap charcoal foundry set up. i used a couple of tins mounted together. got a steel milk pitcher from ikea for the crucible.

i've been trying to dream up something cool to cast.

love to build a gingery lathe but its alot of effort.

Kory
Posts: 8
Joined: Wed Sep 01, 2010 4:42 pm

Re: Furnace for Metal Casting

Postby Kory » Sat Sep 04, 2010 1:32 pm

Bobble,

Thanks for sharing your adventures. The gingery lathe was the first thing I thought of too, but common sense intervened. Have to get the sketch pad out I guess.

User avatar
bobble
Posts: 28
Joined: Sun Jul 26, 2009 4:27 pm

Re: Furnace for Metal Casting

Postby bobble » Sat Sep 04, 2010 2:45 pm

Kory wrote:Bobble,

Thanks for sharing your adventures. The gingery lathe was the first thing I thought of too, but common sense intervened. Have to get the sketch pad out I guess.


kory, what are you going to cast?

anyone have any cool casting ideas?

Kory
Posts: 8
Joined: Wed Sep 01, 2010 4:42 pm

Re: Furnace for Metal Casting

Postby Kory » Mon Sep 06, 2010 12:00 pm

I was thinking of making some small abstract sculptures or figurines, I'm still sketching out some ideas.

User avatar
otto_pjm
Posts: 750
Joined: Tue Apr 06, 2010 10:12 pm

Re: Furnace for Metal Casting

Postby otto_pjm » Mon Sep 13, 2010 11:20 am

Per our conversation on clean-up day. If this type of AL scrap is useful to melt I'll bring it in. It's shavings / dust / small pieces of 6061 from plate I'm routing to make upgrade parts for my CNC.

Pete

IMG_0204.jpg
IMG_0204.jpg (60.13 KiB) Viewed 1410 times



IMG_0202.jpg
IMG_0202.jpg (54.78 KiB) Viewed 1410 times

Kory
Posts: 8
Joined: Wed Sep 01, 2010 4:42 pm

Re: Furnace for Metal Casting

Postby Kory » Mon Sep 13, 2010 12:07 pm

Pete,

From what I have read, chips can be melted down for casting provided they are added to a decent pool of molten metal. Also might help to compact them in a can. Otherwise they tend to oxidize. I'd be happy to give it a shot. Thanks!

Kory

User avatar
Orkraider
Posts: 657
Joined: Fri Mar 19, 2010 11:14 am
Location: downtown Saint Paul

Re: Furnace for Metal Casting

Postby Orkraider » Thu Oct 07, 2010 8:01 pm

I would also be very interested in a furnace for metal casting. The backyard.. site you mention above has lots of good stuff on it.

I've dabbled a little bit with casting with zinc from pennies in a small charcoal fueled furnace I made. It was wicked fun.

It looks like building something on a dolly is a pretty good way to go. This gives you a sturdy framework to mount stuff to, and a nice big pair of wheels to play with.

Most of the designs I've seen involve using either a 5 gallon metal bucket, such as some adhesives or flooring goop come in, or instead a propane tank.

If someone else doesn't make one of these, I'm going to, and hope I can keep it at the space.

Metal casting works really slick if you have a cnc that can work on pink foam. It eliminates the need to make wooden patterns for one off castings. Simply shape your positive out of pink foam, glue on a plank of foam to act as a "sprue", submerge the pattern in a bucket of sand, apply melted metal, and bang! there's your part.

If anyone does start moving forward on this, let me know, so we don't needlessly duplicate effort.

Riley Harrison
Riley Harrison
facebook.com/rileyharrison

User avatar
otto_pjm
Posts: 750
Joined: Tue Apr 06, 2010 10:12 pm

Re: Furnace for Metal Casting

Postby otto_pjm » Thu Oct 07, 2010 8:57 pm

Someone at the HF has a small charcoal furnace and crucible already. I drop some scrap 6061 AL off near Kory's bike trailer project, along with a bag of shavings the other day.

Be happy to cut a foam "positive" pattern for anyone who wants to try it out.

Pete

User avatar
darus67
Posts: 194
Joined: Fri Jan 30, 2009 1:54 am
Location: Coon Rapids

Re: Furnace for Metal Casting

Postby darus67 » Thu Oct 07, 2010 10:50 pm

My charcoal fired furnace is at the shop. It's the festive holiday popcorn tin on the floor, in the corner, by the shelves on the north wall. There's a 12v blower and a 120v blower with it.

Here's my original blog about it: http://www.visi.com/~darus/foundry2/

Its based loosely on the Gingery style, but slightly smaller (Metal 5 gallon buckets are hard to find) and with a different refractory lining.

I think there's a small collection of hard drive chassis and other misc. aluminum bits around there, too.

I'd be happy to get together and fire it up one of these days.


Return to “Group Projects”

Who is online

Users browsing this forum: No registered users and 2 guests

cron