Page 108 of 165
Posted: Tue Jul 10, 2012 2:18 pm
by Labtecpower
Nice... centre of gravity? looks like the walls could have been a bit thinner...
somewhere around the end of the hole.. The walls could certainly have been thinner, but I did this to make them reusable, not working when i'm shattering them against bricks, or burying them under the lawn

Posted: Fri Jul 20, 2012 8:23 pm
by Fnord
New foundry built today, and a torch to go with it.
Capacity will probably be about 200 cubic inches with a steel crucible, about 1/3 that with my graphite one.
I threw five pounds of steel in it and got it glowing orange in 3-4 minutes. It's mainly for bulk aluminum, but I might try using it to cast steel in the far future.
Short test video.
Posted: Fri Jul 20, 2012 8:25 pm
by MrCrowley
Link doesn't work
What will you be casting parts for? A hybrid I hope.
Posted: Fri Jul 20, 2012 8:33 pm
by Fnord
Works now... wasn't done converting apparently. Vimeo chewed the compression up a bit
I'd actually like to get a lathe underway; much more useful in the long run. If I can get it to melt steel I might use it for a high-pressure fittings I'd otherwise have to order online. And I'd never have to buy thick stock material again.
Posted: Fri Jul 20, 2012 8:44 pm
by MrCrowley
Could always cast parts to
make your own motorbike
Thought about using casting to make
your QDV hybrid idea? Now that I think about it, casting does open up a lot of possibilities for piston valve design and manufacturing custom fittings to improve hybrid design.
Posted: Fri Jul 20, 2012 8:59 pm
by Fnord
Thought about using casting to make your QDV hybrid idea?
That's a possibility, though the paint bucket foundry had enough capacity for the bulkiest part in that design(piston). For testing purposes I'll probably make some ash trays for the guys at work, since a couple of them asked me why I rolled a big chunk of galvanized steel yesterday

.
Oh yeah, and I may use this as a forge in the future.
Posted: Mon Jul 23, 2012 9:52 pm
by ramses
Does that use waste oil or straight propane?
Posted: Mon Jul 23, 2012 9:56 pm
by Zeus
Nice work, looks like propane to me?
Posted: Tue Jul 24, 2012 7:18 pm
by Fnord
It's just propane. You can probably see there's no second inlet on the torch. (typically you need forced air with a waste oil torch).
I cranked up the heat a little sunday night and scrapped some copper I had laying around... here's a crappy video still of the crucible coming out.
Posted: Tue Jul 24, 2012 8:04 pm
by Zeus
Fnord, by horrible things that can go wrong while you're playing with hot metal, does that include dropping the full crucible while you're wearing shorts?
Posted: Tue Jul 24, 2012 8:14 pm
by Fnord
Hey!
Shoes.
Shirt.
Safety glasses
...AND pants. (Shorts are basically pants)
That's a lot better than I usually do.
No gloves, socks or underwear though.
Posted: Wed Jul 25, 2012 12:15 am
by jackssmirkingrevenge
"Mummy, why does uncle Fnord not have children we can play with?"
"Well dear... you see, "Commando" is not just a Schwarzenegger movie..."
Posted: Thu Aug 02, 2012 6:54 pm
by mark.f
itwost, I got my hands on a working A/C compressor. All I need is a single compression fitting and air filter and I can say goodbye to 10 minute pumping sessions.
Posted: Fri Aug 03, 2012 4:56 am
by MrCrowley
This is what I did today. Not exactly helpful for most of us but might be a useful example for newbies. The main reason I filmed it was just so I had some hard numbers for these two cannons (my only 'large' bore pneumatics).
[youtube][/youtube]
Posted: Fri Aug 03, 2012 11:41 am
by mattyzip77
you always make the best videos!! Where did you get that chronny and how much was it?? That sprinkler valve is a monster!!