The Shop > Metal Stuff

Oil fired crucible furnace

<< < (38/46) > >>

tom osselton:
Ironman
The zircon is itc 100 that I used it is definetly pricy $100.00 for one pint. It looks different than the paint you used it was quite watery and seemed like it left a sandy substance in the bottom of the tin not too much though. I brushed it into the base joint. I was thinking maybe it reached it's saturation point. The fiberwool was $12.00  and change per foot. It is done though just sitting on the floor I have not made a frame yet to lift the lid but that's what sticks are for!  I fired it up this afternoon and it ran great even though I had to use a smaller pipe 1"  inside dia easy change when I find some so no worries I am a happy camper  :ddb:  So thanks for posting your video (s) I always learn something.  :D
Ps

 :worthless:
Coming soon

tom osselton:
Here it is if you haven't seen it in the project''s thread.

http://madmodder.net/index.php/topic,8920.0.html

vtsteam:
I've been away on holiday with the family, so apologies for late responses. Thanks Andrew -- those look interesting -- looking forward to giving them a read.  :dremel:

Tom great to see your furnace construction -- looking forward to following your thread!  :clap:

I was thinking of casting today -- first day back -- but decided to do something instead that I've wanted to do for awhile. Basically set up the wood lathe and make some loose pieces for riser pattern, sprue plug, sprue basin pattern, and a runner pattern.

These will save me a lot of time in cutting these in the sand and then cleaning and tamping the loose sand. These are somewhat similar to the permanent pouring system patterns sometimes seen on match plates. The difference is, these will all be loose pieces -- intended for single piece castings without a mounting plate.

The sprue plug is tapered -- I'd previously achieved that by rapping the top of a straight sprue dowel to form the taper before removing the dowel. The bottom of the plug has a brass pin to fit in a hole in the the sprue basin pattern. That will help keep it in position during ramming.

The riser pattern replaces a piece of 1-1/2" OD pipe I had used on the last few castings -- the new pattern has a rounded bottom and is not hollow as the pipe was. The rounded bottom should reduce loose sand after pulling the riser as well as reduce surface area to keep the metal in the riser hot longer.

The sprue basin has a hole to mate with the sprue. I won't have to dig out a basin any more, and again, loose sand will be less of a problem -- I won't have to smooth it down, and the basin will be pre-formed.

The runner has a taper at the end to serve as a slag trap. Again -- a nice pre-formed channel with less cleanup required.

I can see making a few more of these kinds of mold parts to put them together like "TinkerToys" to fit various situations.

vtsteam:
This is more or less how they might look assembled with a pattern for a pour:

vtsteam:
Finished.

Navigation

[0] Message Index

[#] Next page

[*] Previous page