Lance Looks very nice. If it were mine I'd take a sledge to it and break it to pieces. As a youngster it was often my job to turn the crank on one of these, I...
Hey John, They work fine if you replace the hand crank with a pulley, belt and electric motor. :-) Post drills are great where a slow turning bit is required. ...
Hopefully in the next week or so.I need to make a larger flask and upsets so I can cast a copper end cap for a steam boiler. Dave Patterson odd_kins@... ...
I just finished making the Gingery metal shaper. Does that count? You can see it on YouTube if you search for rgsparber1. I also wrote 52 articles on it on my...
Since you asked and I am bored with TV, I thought I would provide some thoughts. I do occasional casting using Petrobond and ZA-12 of fairly small pieces ...
Hello Dennis, Interesting. What size is your arbor press? I'm trying to get an idea how much pressure you used to press the sand. Did you have any trouble ...
The arbor press weights about 60 pounds, I don't know how much pressure it produces, but I used the supplied handle at full length and 'leaned' on it. The...
A friend had a low cost hydraulic press and a low cost air over hydraulic jack that he was going to marry up so he could make the press work a bit quicker with...
A hydraulic press would probably be even better then my arbor press. Less work, which is my objective. How hard to pack the sand seems to be a quantitative...
I a gauge were fitted to the hydraulic side of the jack, it would be easy to get repeatable, and hopefully predictable results. Here is a bench top press that...
I effectively 'Jolt' the sand when Lost Foam Casting, I mostly use a large steel bucket in which the foam pattern is buried and then the whole thing is...
Dennis: I saw that very same episode & marvelled at how fast the employee (which showed Mike how to make up the mold) was. Of course, when you are paid by...
John, I want to be sure I have your process straight. You make the mold from foam. You put DRY sand into the bottom of a steel bucket. You riddle DRY sand...
Hi Lance, My 'magik. piece of casting equipment is a toilet roll cardboard tub. This is glued to the foam pattern and then it is all buried up to the end of...
A number of years ago, there was a poster on the metal casting list that described an interesting approach to lost foam casting. This was in a class with a...
Dennis: This would be "quicksand casting" ........ Quicksand is fluidized by a water supply from beneath......the only difference here is that the "fluid" is...
My question is: can I use sand that already has been used for green sand casting (already has bentonite clay and wood flour added), or do I need to use pure...
Ive tried this both ways. Regular sand is much better than used greensand. Undercuts in the pattern can still be a problem ... silica ... that ... in a class...
I agree that just dry sand will be better. You will want to be careful of the dust. I use a copper tube that I bent into a circle to fit into the bottom of a...
Hi, The other day I saw a Discovery-documentary of the building of this carrier. There were some iron parts cast in yellowish, sweet smelling sand. The flask...
I saw that episode and noted the solid mold. It would appear to be one of the many resin based molding techniques used by commercial casters. Each competing...
Dennis, yesterday we poured a resinbonded mold at Leon's with Cast Iron. It uses a Phenolic Resin bonding agent. bill hinkle in Oklahoma In a message dated...
Lance You can wrap duct tape around the sprue or use a cardboard tube. Banging on the ground compacts the sand around the pattern and helps to fill undercuts....
Come on Bill I need names -sources! I am still looking for the holy grail of casting. Put patterns in a flask, pour in ??, wave wand, then pour metal. I have...
Dennis- For high detail, particularly with smaller parts, look into lost wax casting. It can either be done centrifugally or with a vacuum applied to the...
Actually, I have a complete set up including vacuum table, wax injector, burnout furnace and supplies. I have gone though the process once with my equipment....
If you add ordinary molasses to the mix, the gas created by the heated molasses helps to break down the bond... you wont have to use power tools to remove the...
Nice work, Bill! Fun to see "my own" Gingery divider being molded the same way. Molasses cores work great and indeed smell nice ;-) This made me wonder if by...
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