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  • ryanjones2150
    replied
    oh man, imagine having to do everything with a file...I'd have Popeye arms...

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  • buffumjr
    replied
    Originally posted by ryanjones2150 View Post
    I dunno. Why didn't you think to move the truck? I agree though, grinding makes a terrible mess of things. Maybe we can invent the dustless grinder and make hundreds of dollars.
    It's called a file. Unfortunately, it takes too long.

    The Ford's hood was the price I paid for that bit of knowledge.
    Last edited by buffumjr; 06-22-2016, 05:35 AM.

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  • ryanjones2150
    replied
    I dunno. Why didn't you think to move the truck? I agree though, grinding makes a terrible mess of things. Maybe we can invent the dustless grinder and make hundreds of dollars.

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  • gnforge
    replied
    5-50 may not be for everyone. But as for 20-25. price comparison keep in mind Oxy is far cheaper than Acy. <br />
    Lg. Oxy $18.50 Med. Axy. Almost 3-times that much. <br />
    And 50lb. Is not that high. In my large Smith torch tips they recommend 50 to 60 lbs and my rose bud runs at 60 lb. <br />
    but a tank goes fast at that pressure with a rose bud tip. <br />
    I'll try anything once but it needs to work to keep doing it. And yes grinding helps cutting and welding both.

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  • buffumjr
    replied
    Originally posted by ryanjones2150 View Post
    Grind outside.
    (head slap) Now, why didn't I think of that? Gotta move the cars, tho. The iron dust hurts the paint. Had to get a Ford truck's hood repainted because of it. Something in the paint makes the iron dust eat into it.

    With the grinding, even junk steel cuts soooo much betta.
    Last edited by buffumjr; 06-21-2016, 08:57 AM.

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  • ryanjones2150
    replied
    Grind outside.

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  • buffumjr
    replied
    5/50 !! WOW! THAT's pressure! No, I'm not going to try that. Seems diminishing returns. Oxygen costs money, too.

    20-25 cuts just fine with the right tip. Nice, smooth cuts. Even tried bevel cuts. Success.

    I have Goss propane torches for silver soldering and heat treating. Propane there. Get some fire brick. Tractor Supply has it. Make a box. Buy one of the bigger Goss (www.gossonline.com) heads, make a hole for the head, and one for gas exit. Don't aim the torch at the work. You can heat to yellow heat, no problem. Be sure, when buying your Goss heads, to buy all the same mounting style. You can then buy only one handle, and interchange the heads. Saves big $$.

    A propane setup for cutting. Excited. I'll ask my supplier about a propane setup, today.

    Grinding went a long way to solving the problem, but it still happens. Junk steel? Salt water in cracks? Ah well, industrial surplus.

    Now that I'm doing so much grinding, I'm going to have to fabricate a grinding dust collector to attach to my shop vac. Suggestions?

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  • burninbriar
    replied
    They make a seat reamer that works great. The guy where I buy my gasses reamed mine for me. Didn't cost anything' he is a friend of mine. I would assume that if your gas supplier has one it wouldn't cost much to get the seats dressed.

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  • USMCPOP
    replied
    An old chart I have says:

    1/4" plate, Victor 00, 5/20-25

    3/8" plate, Victor 0, 5/25-30

    Used to be, Oxy/Acet was used to blast off mill scale, so I can see that it could cause popping. The thermal expansion difference between the scale and the base metal and lower thermal conductivity of the scale is the reason this works I think.
    Last edited by USMCPOP; 06-12-2016, 09:51 AM.

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  • Aeronca41
    replied
    Interesting -never heard the 5/50 thing. Will give it a try.

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  • gnforge
    replied
    A wile back my LWS went to a training and told me to give the 5 - 50 rule a try. 5lbs Acy and 50lbs Oxy. <br />
    I've used torches for 40 years and never set mine quite like that but after a try I liked it.<br />
    Also a few years back Acy was very expensive and hard to get for awhile. I switched to propane for my pre heat and heating then switched cutting tips, it took some getting used to but I cut 90% of time now with propane works great and is fraction the cost. <br />
    In shop cutting is all plasma unless over 1-1/4"<br />
    Then propane. But on road work is mostly torch. <br />
    Greg

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  • Aeronca41
    replied
    Thanks! Unfortunately way too far from NY to stop by!

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  • buffumjr
    replied
    Originally posted by Aeronca41 View Post

    Outstanding! Glad you got it figured out. Now just practice and practice some more. You sound like a guy who will always figure it out. Where's that industrial surplus store? I love those.
    Sanford, FL. You get off I-4 at the Sanford/17/92 exit. Go straight through the light, and turn right at the Kangaroo station. Go under I-4, and there it is on the right. Acme Industrial Surplus, where Wiley Coyote shops. Part of the fun of shopping there is the steel you buy could be anything. One 3/8 plate I bought had a lot of chrome in it, and was not weldable, though it was called "mild steel". "Ya pays ya money and ya takes ya chance."

    Tonight is practice, when the temperature gets below 90°. Lots of grinding, first.

    I'm going to try the #0 tip on a piece of 3/8. If it cuts OK, #0 will be my standard tip.
    Last edited by buffumjr; 06-10-2016, 10:28 AM.

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  • Aeronca41
    replied
    Originally posted by buffumjr View Post
    Thanx, guys.

    Dirt, rust, and seating. Using knock-off tips bot from Amazon for $6.00. Victor style torch by Forney, bought in 1990. Used a wrench, and the popping stopped! Will try cleaning the plate with a grinder prior to cutting. The book recommended this, too.

    A side benefit from all this cutting is I'll have lots of plates for stick welding practice! Love my local industrial surplus store. 85¢ per pound for scrap steel of definitely unknown composition.

    Lots of structured practice ahead. Wish I had an onsite instructor, but that's a $10K luxury. Didn't have one for MCSE, C, Oracle, or Unix, so I should be able to do this on my own, too. You guys are the next best thing.

    The book is &quot;Welding Level 1 Training Guide&quot; by NCCER. Pro level book. You can tell, because half of it is safety stuff, like having a fire watch, using the plant electrician, etc. Geared for industrial level.

    Amazing what you can learn if you just try.
    Outstanding! Glad you got it figured out. Now just practice and practice some more. You sound like a guy who will always figure it out. Where's that industrial surplus store? I love those.

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  • griff01
    replied
    Originally posted by buffumjr View Post
    Thanx, guys.

    Dirt, rust, and seating. Using knock-off tips bot from Amazon for $6.00. Victor style torch by Forney, bought in 1990. Used a wrench, and the popping stopped! Will try cleaning the plate with a grinder prior to cutting. The book recommended this, too.

    A side benefit from all this cutting is I'll have lots of plates for stick welding practice! Love my local industrial surplus store. 85¢ per pound for scrap steel of definitely unknown composition.

    Lots of structured practice ahead. Wish I had an onsite instructor, but that's a $10K luxury. Didn't have one for MCSE, C, Oracle, or Unix, so I should be able to do this on my own, too. You guys are the next best thing.

    The book is "Welding Level 1 Training Guide" by NCCER. Pro level book. You can tell, because half of it is safety stuff, like having a fire watch, using the plant electrician, etc. Geared for industrial level.

    Amazing what you can learn if you just try.

    Heavy mill scale will do the same thing. Also, several years ago, I had a new Victor torch with Victor tips that would pop even when not cutting. I "seated a couple of tips" with valve grinding compound. Now any tip in this torch is ok.. Must have been a minor imperfection in the torch head tip seat.

    HTH
    Griff

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