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I Forge Iron

potatoeman

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Posts posted by potatoeman

  1. again, thanks to everyone for their helpful responses. The copper shims are an interesting idea...

    I decided to try to shim out the "sow block", there seems to be the most wiggle room there. but I can't get the key out. The previous owner put in a second key of shim from the other side of the sow block as the main key,and I didn't realize this until i had pounded on the blind end for 10 minutes, looks like I mushroomed the ends a little bit.

    My question now is: is there a trick to pulling out the sowblock key the way in went in (without hammering on the thin end)? I tried welding a bar onto the protruding key and hammerin g on ther bar, but the welds keep breaking. I thought maybe I could thread the end of the key with a threading die, put a big nut on the end, and crank it off ?

    blind_side.jpg

    protruding_side.jpg

    here's a top down view of the important parts for clarification. Not to scale.

    How do I get the blue key out ?    somebody must have done this kind of thing before...?

    diagram.jpg

  2. It has a sow block. You are correct, it looks like shimming the sow block 3'32" would do the trick as well. But I can't remove it.  I tried hammering out the key, and after a while I realized, there are two keys, one hammered in from each side, with one key buried in the keyway 3 inches deep. So it's impossible to tell which key to pound out. I thought I could arc weld a bar onto the key that is sticking out, then I could hammer 'backwards' on the protruding key to pull it out.....if you can understand that.

  3. I think I got it. I sprayed the crap out of it, literally, by dousing all the wearing surfaces where wheel meets shaft with half a can each of degreaser, WD-40 and PB blaster (rusty nut loosener) I am now unable to move the flywheel by spinning the big pulley wheel, and it spins quite freely now. I could feel it getting easier with each ounce of petroleum distilate I sprayed on. I'm going to re-oil and re-grease everything and give it a go....

  4. ok-good idea about removing the clutch blocks, that would be an easy test.

    Before I oiled everything, I could pull on the belt by hand and the clutch would stick and the hammer would go up and down. Now if I rotate by hand, the clutch sticks and rotates maybe 10 degrees, then slips and falls back. 

    @ Jeremy: At first, if I would step on the treadle, sometimes the clutch blocks would stick in the "on" position. I put a bunch of bar-and-chain oil on the clutch-collar area, now the spring returns everything pretty quickly when I take my foot off the treadle. Pulling up on the treadle doesn't do anything, the spring pulls it all the way up.

  5. I bought a 25 LG (new style) and I'm trying to get it working. It's in fantastic condition and looks like it's hardly been used. It was probably last used in about 1980 ? I put a new 1.5 hp motor with a double pulley and v-belt drive on it, and when I switch it on, it hammers at full speed. I've oiled the blocks and all the oil and grease points detailed on the Little Giant website, and I'm not sure what to try next. Is there an adjustment screw for the clutch ? There is no visible wear on the blocks and there is just enough room to slip a thin business card between the blocks and the wheel (that they press against). I was thinking of reversing the direction the motor turns, maybe the hammer ran the other direction in it's previous life ? 

     

  6. The flux has two jobs; eat oxide off the steel and prevent new oxide from forming by shielding the piece from oxygen. If you start with a clean workpiece, maybe you only need an oxygen barrier to protect the steel while it heats up ? English smiths, apparently, don't use any flux at all ? 

  7. It seems like everyone goes to a lot of trouble to line their welding forges with stuff that will resist the corrosive action of caustic borax flux. Is there a commercially available flux that won't eat through ceramic fiber insulation blankets ?  Maybe a guy could pay a little more for commercial flux, but his forge would last longer and be safer ?

    This from Wikipedia:

    Early examples of flux used different combinations and various amounts of iron fillings, boraxsal ammoniacbalsam of copaibacyanide of potash, and soda phosphate. The 1920 edition of Scientific American book of facts and formulae indicates a frequently offered trade secret as using copperassaltpeter, common salt, black oxide of manganeseprussiate of potash, and "nice welding sand" (silicate).

    Would one of these formulas work just as well, and not eat through the forge lining ? Is all that stuff safe to breathe ?    Is borax safe to breathe ?

  8. oh, I can swing it alright. Those photos were taken in my garage. = ) yes, new style. SN 7548, shipped 4-30-1947 to the Des Moines Iron Co. (a wholesaler) you can see, that name is still written on the frame, so it is in original condition.
    thanks, everyone for the replies; I've seen pictures of 100 lb LGs with the triple belts, and I just thought it looked cool.....I guess the single flat belt is the way to go !

  9. Ok, it didn't come out of a barn, and I didn't find it. It was listed on craigslist and it came out of an old blacksmith's shop, where it's been sitting unused for a long time, maybe 20 years....? I don't have any experience with power hammers at all, and I'm mostly afraid I'll damage it by incorrect use. What's the best way to learn all about LGs ? Is there a good book, or maybe Sid's Rebuilding the LG video ?
    I know you guys love photos, so here ya go....!

    post-22489-0-75088900-1318225865_thumb.j

    post-22489-0-64726700-1318225877_thumb.j

    post-22489-0-32496900-1318225886_thumb.j

    post-22489-0-42314300-1318225902_thumb.j

    post-22489-0-73687800-1318225919_thumb.j

    post-22489-0-05755400-1318225938_thumb.j

  10. does this look like a good hammer ? Can these Striker hammers get worn out ? Seems a few thousand less than other used strikers I've seen. Assuming it doesn't get bid up a lot at the end. Seems a bit suspect to me.

    http://www.ebay.com/itm/POWER-HAMMER-/130574229890?_trksid=p5197.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D4%26po%3DLVI%26ps%3D63%26clkid%3D2820764703338890928#ht_500wt_922


    "Three hammer heads, one flat, one curved face, and one half curved and flat face"

    "We have only used this hammer only a little and it is fanatic and easy to use "

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