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Activity stream for all registered members at The Home Foundry.

  1. Zapins replied to the thread Chunk Style.

    You have a 2 stage pump? Only 2 stage pumps pull close to 30. The single stages suck. So just to be clear, you don't vacuum at all...

    Feb 21, 2019 at 5:02 PM

  2. joe yard replied to the thread Wax piston sprue extruder?.

    For all purposes wax acts like plastic in a lot of ways. It will be a question to be answered by trial and error as to the amount of gap...

    Feb 21, 2019 at 4:12 PM

  3. Zapins replied to the thread Wax piston sprue extruder?.

    1 to 2 lbs a minute. Wow that's a monster. That's like 3 feet of hollow 1 inch rod a minute or 1.5 solid 1 inch rod. If I make smaller...

    Feb 21, 2019 at 3:29 PM

  4. Zapins replied to the thread Chunk Style.

    Damn that came out nice! Lot of work went into that. I hope you manage to sell a few to make up the cost of time! Interesting. Maybe...

    Feb 21, 2019 at 3:22 PM

  5. joe yard replied to the thread Wax piston sprue extruder?.

    Just doing some eye ball math with the gear box / motor turning the screw you have cast. The extruder will have an output of between 1...

    Feb 21, 2019 at 3:21 PM

  6. PatJ replied to the thread Bob Puhakka on Bifilm theory.

    Could the dogleg in the horizontal runners be intended to adjust/reduce the velocity? That is the only logical explanation I can see....

    Feb 21, 2019 at 1:55 PM

  7. HT1 replied to the thread Bob Puhakka on Bifilm theory.

    the Lodge Pans definitely break some of Bobs rules, 1. the runner branches splitting the Flow, 2. the extension of the sprue is not...

    Feb 21, 2019 at 1:51 PM

  8. PatJ replied to the thread Bob Puhakka on Bifilm theory.

    I have had air bubbles trapped in the high points of molds, and those bubbles (perhaps 3/4" across and 1/4" deep) ruined the castings....

    Feb 21, 2019 at 1:45 PM

  9. Melterskelter replied to the thread Bob Puhakka on Bifilm theory.

    Just for the sake of discussion: The tapering of the runner may be a bad idea or maybe not. The reason it might be a good idea is that...

    Feb 21, 2019 at 1:09 PM

  10. Peedee replied to the thread Wax piston sprue extruder?.

    Augers tend to spit out the incoming material back into the hopper, think about the interaction of the screw as it leads in to the front...

    Feb 21, 2019 at 12:40 PM

  11. PatJ replied to the thread Bob Puhakka on Bifilm theory.

    I absolutely love this guy. He is so spot-on with his assessment of what goes on in the industry that it is not funny. This goes on in...

    Feb 21, 2019 at 11:59 AM

  12. PatJ replied to the thread Bob Puhakka on Bifilm theory.

    And so that is what makes for a head scratcher, which is how some people seem to violate many/most of what are claimed to be such...

    Feb 21, 2019 at 11:02 AM

  13. Tobho Mott liked Jammer's post in the thread Bob Puhakka on Bifilm theory.

    Just for reference here is the runner system used by Lodge Cast Iron. The sprue runs down the center of the male side and then risers...

    IMG_0040.JPG IMG_0041.JPG 004.JPG Feb 21, 2019 at 10:36 AM

  14. Tobho Mott liked Jason's post in the thread Molding Benches.

    Look! A milling machine for this guy! [ATTACH]

    Aki-319-1-640x359.jpg Feb 21, 2019 at 10:34 AM

  15. Tobho Mott liked Petee716's post in the thread Molding Benches.

    The Lollypop Guild banned those sometime in the 50s when they started admitting taller members. After Glinda finally seized power she...

    Feb 21, 2019 at 10:34 AM
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