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  1. #31
    Join Date
    Mar 2017
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    wollondilly nsw
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    62

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    If you clamp the jig in the vice and release it slightly you will be able to index the pipe then lock it up again. A poor mans collet so to speak

    Sent from my SM-G930F using Tapatalk

  2. #32
    Join Date
    Aug 2017
    Location
    Orlando
    Posts
    27

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    how do i drill holes in a pipe without a starting bush to drill the holes in said pipe to use as a bush?

    not trying to be funny

    Centre punch the first 2.
    ah ok

  3. #33
    Join Date
    Mar 2017
    Location
    wollondilly nsw
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    62

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    Centre punch the first 2.



    Sent from my SM-G930F using Tapatalk

  4. #34
    Join Date
    Mar 2017
    Location
    wollondilly nsw
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    62

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    You can also grind/file a flat on the bush where you want to drill your holes but I would still centre pop as well. Costs nothing and saves time and drills

    Sent from my SM-G930F using Tapatalk

  5. #35
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

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    Quote Originally Posted by littlemick View Post
    Centre punch the first 2.
    These need to be in line otherwise you will produce a nice spiral of holes. It might look nice, but I don't think it will produce the required flame pattern.

    Dean

  6. #36
    Join Date
    Oct 2008
    Location
    Cairns, Q
    Posts
    666

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    Quote Originally Posted by 20GT View Post
    I don't have a vise that's why I was making this set up.
    You show a vise sitting on the mill table in the photos in your other thread, which you have referred to as a mill. It is a compound or two way or cross vise - all names for this type of vise.

    //metalworkforums.com/f65/t2009...er-drill-press

    Frank

  7. #37
    Join Date
    Aug 2017
    Location
    Orlando
    Posts
    27

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    that's true I didn't think of that as a vise

  8. #38
    Join Date
    Aug 2017
    Location
    Orlando
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    ok that was too easy and I discovered a magnet sticks to the pipe so if its stainless steel its ferritic stainless steel.


  9. #39
    Join Date
    Mar 2004
    Location
    Carine WA
    Age
    74
    Posts
    75

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    1/16" hole is too small. This will produce a very small flame. Consider 3/32" or 1/8". Drill a few holes in a sample piece of pipe and test the result. Use a smaller drill first and increase the hole size (as required) to suit. Be careful. You may need to change the jet size to achieve your preferred flame. You will need to adjust the aerator to obtain the best looking flame. My recommendation is, try for a flame length of about 1" and adjust the aerator to eliminate any yellow tips. BTW, jet sizes for LP gas are MUCH smaller than "mains" gas.

    Clean out the burrs from the inside of the holes, this can influence the gas flow through the holes.
    Kind Regards

    Peter

  10. #40
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    I used to make a similar component for an air conditioning/heating company. I ended up getting a toolmaker to grind down the ends of centre drills to 1/16", as drilling the stainless was getting expensive on jobber drill bits.
    Kryn
    To grow old is mandatory, growing up is optional.

  11. #41
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

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    I have made burner jets using .9mm mig welding contact tips.

    If you need to play with jet sizing different diameter contact tips are available in .6mm, .8mm, .9mm and 1.2mm to suit wire sizing, then available as singles from a weld supply shop.

    From memory the outer diameter thread was M6. Some contact tips are threaded ,others have a cam shape to fit.

    The burner venturi was adjustable by means of a round plate with a central 10mm thread.It screwed up on a 10mm thread tube in which the mig tip was threaded and the assembly projected into the burner.

    The burner tubes were not drilled but slotted with a thin blade angle grinder cutter.

    The pipe was about 32 od and cuts were about 50mm apart and for about 25mm arc across the pipe.

    We had only black pipe but it was only for a single use for a burners on a spit for 21st birthday party so longevity did not matter.

    Hope this helps

  12. #42
    Join Date
    Feb 2015
    Location
    Oz
    Age
    73
    Posts
    459

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    Here are a couple of burners I made for bush showers. They were mad e from 20 or 22mm round tube I bent in about a 4-5" circle, added a straight piece for the inlet and drilled a hole the the straight section into the circular burner. The holes on the gray burner are around 3mm from memory and are larger than the holes in the the black burner and consequently heated the shower water quite a bit faster. I still have the black burner which I use when we bush camp in the Penguin. The bigger the holes the quicker they heat - up to a point... If it's of any use I can measure the holes.
    Attached Images Attached Images

  13. #43
    Join Date
    Aug 2017
    Location
    Orlando
    Posts
    27

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    Quote Originally Posted by MrFixIt View Post
    1/16" hole is too small. This will produce a very small flame. Consider 3/32" or 1/8".
    I pulled one of the old brunner's today. They don't appear to be the ones I remember. The ones I remember had tiny can opener type holes, this one has actual holes.
    I put a 1/16 bit in the hole and i looks like a match

    hole.jpg

    i suppose the next step before testing is to make the venturi

    venturi.jpg

  14. #44
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

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    I have never seen mesh covering the air intake holes. All the ones I have seen are just open. The mesh would reduce the air flow and slowly block up. I am also used to seeing the air holes further up the tube leaving an uncut section on the end.

    The only mesh I need is to cover the air holes in the BBQ body to keep the rodents out. Mine is homemade from a heavy wall 44. I fitted 4 cast iron burners which where the biggest cost by far. That was over 20yrs ago. I need to make a stainless steel grill section as the mild steel one keeps going rusty.

    Dean

  15. #45
    Join Date
    Aug 2017
    Location
    Orlando
    Posts
    27

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    Quote Originally Posted by Oldneweng View Post
    I fitted 4 cast iron burners which where the biggest cost by far. That was over 20yrs ago.
    Dean
    something like this?

    2017-08-29 20_46_35-All Points 24-1061 16_ Cast Iron Broiler Burner with Air Shutter.png

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