Recent Content by John Gaertner

  1. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Forum, I was hoping to get some casting done last week but the weather here in VA was not favorable. I did get to test my LPG burner with...
    Post by: John Gaertner, Jul 17, 2022 in forum: Sand Casting
  2. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Thanks FishbonzWV. I do appreciate the helpful details. Jgaertner
    Post by: John Gaertner, Jul 9, 2022 in forum: Sand Casting
  3. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Kelly wrote: In the 90kbtu range, that burner is plenty for the furnace he offers. I'd be surprised if it could not be suitably tuned. Might just...
    Post by: John Gaertner, Jul 8, 2022 in forum: Sand Casting
  4. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello HT1, Thanks for sharing these details. Jgaertner
    Post by: John Gaertner, Jul 8, 2022 in forum: Sand Casting
  5. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Thanks Kelly, I have a NA burner. Pin hole is pretty much right on the money, as stated before in this thread. I have not had any chance to test...
    Post by: John Gaertner, Jul 8, 2022 in forum: Sand Casting
  6. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Denis, Thanks for your comments. I had to build an ASTM qualified impact tester for a DOD lab I use to work at. One of our MANY projects...
    Post by: John Gaertner, Jul 8, 2022 in forum: Sand Casting
  7. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Ht1, Can you please explain your comments so I can learn what I may be doing wrong? What do you mean by "Hard Ram"? I am ramming my sand...
    Post by: John Gaertner, Jul 7, 2022 in forum: Sand Casting
  8. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Smoking Shoe. The facing sand is PetroBond #130. It is finer than the backing PertoBond I use. I then just fill the rest of the cope and...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  9. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Kelley, Thanks for confirming that regrading the orifice and burner tube. I put a 0-60 PSI down stream of the red regulator. Had the parts...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  10. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Kelly, I measure the orifice and it 0.042" or #58 wire drill . The burner tube has an ID of 0.819" standard cast iron pipe. I do not know...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  11. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello HT1, The pattern I have has great detail and it will transfer to the sand. If you take a look at my posted pictures, you can see the wax...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  12. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Thanks Jeff, I think this is a good detail to work on. I have an entire machine shop, so building a shutter for the inlet will be a piece of cake....
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  13. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello HT1, I have tried installing this pattern, both facing into the Drag and more recently, facing up, into the Cope. I am using 130 for my...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  14. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Denis, Thanks for this helpful suggestion. I guess I have to figure out whether my propane furnace can be enriched or leaned? Its pretty...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting
  15. John Gaertner
    Post

    Pouring cup or pouring down the downsprue?

    Hello Kelly, I have a run of the mill digital pyrometer with a contact K-type thermocouple with ceramic shell from McMaster Carr. I did not...
    Post by: John Gaertner, Jul 5, 2022 in forum: Sand Casting