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Everything posted by boilermaker

  1. just did a quick search and found this: http://www.britishblades.com/forums/showthread.php?69525-Hydraulic-Press-using-a-Regeneration-CIrcuit same press but with more info, hope this helps
  2. the anvils on the jap power hammers seem to be quite small for the size of the ram, does anyone know what ratio they are?
  3. Bryan, is chucks video on anvilmaking available on DVD? if so where do you get it? Cheers.
  4. G'day John, is there any reason to use Bronze bearings rather than roller bearings (self centering pillow block type)?
  5. Chuck, can you tell me how you hardened your anvil faces?
  6. G'day, you can buy plans from clay spencer for the tyre hammer, i bought mine from him a few months ago. Try contacting him on the following: clay@tirehammer.com or call him on 256 498 1498 Cheers, Keetha
  7. Thunder, about the 50 ton jack , i got one here in Australia (NOT 50 BUT A 30 TON OMEGA AIR OVER HYDRAULIC) and it moves waaay to slow also needs a heck of a lot of back pressure to retract the ram because it has no return springs.The jack itself weighs about 60Lbs and is about 5.5" in diameter. My compressor is a 50L 8CFM 3.5HP model that puts out up to 150psi and using my jack drained it in no time (like pushing the ram out 1" ), i have now ordered a HF jack like yours and put my 30Ton aside for a different project. Maybe if you had a big industrial duty compressor the bigger jacks would be OK? hope this helps save everyone some money and trouble. cheers!
  8. Excellent machine thunder, i think i'll give it a go making one. Can you tell me what stroke your jack has? cheers mate! By the way i work construction and mining jobs, pipefitting etc. what sort of boilermaking do you do?
  9. any good for welding damascus billets brother?
  10. Compressed oxygen and oils etc. can cause detonation
  11. excellent! i like seeing the solutions people come up with to various problems.
  12. excellent stephan! i'm also in the process of building a kmg style grinder using wheels from tracy (good bloke eh!)
  13. There was a company a few years ago (big blu?) that was making these machines comercially. they, by memory where using a bottle jack instead of the strut and star nut arrangement for adjusting the bottom roller. this might be something else worth considering?
  14. g'day all, how well do gas ht ovens with the sacraficial pipe hold set temp? do you need a gas solenoid linked to a thermocouple to really hold set temp well or can you achieve this just by adjusting the burners? thanks.
  15. G'day Geoff, have you seen this design? http://www.riversidemachine.net/productCat4985.ctlg sorry,dontknow how to make the link active. i like this design because all the hydraulics are underneath and guarded, rather than at head height should something go wrong i started a similar thread myself a while back, i cant remember if it was on this forum or bladeforums.com, there are more pics of the same design on that thread. i'll see if i can find it for you. have a good new year mate and post some pics of your progress The thread is on this forum, but i cant seem to link to it. if you just search for posts by me (boilermaker) its in there. Maybe this will work: http://www.bladesmithsforum.com/index.php?sh...amp;#entry69224 Cheers! Keetha..
  16. hey cool! maybe a smaller version could be made for use as a horizontal knife vice?
  17. What configuration press are you going to build? if you're anything like me buliding the tool is half the fun anyway, so out with the old and in with the new is no dramas. looking forward to seeing the progress on your press
  18. G'day all, i was just reading one of the other topics (suggested forge size) and it got me to thinking, how many layers of kaowool IS best. there seems to be so many different ideas it is sometimes confusing trying to work out which is the best way to go? i'm in the process of building an upright forge ala. donn fogg type, and have been in contact with a maker whose forging DVD i have been watching, and he said that more than 1 layer becomes too inefficient and costly fuel wise, however it seems to make sense that the more insulation the better, maybe it would just take a little longer to heat up? what is everyones opinions/experiances with this? thanks in advance for your replies. P.s i live close to sea level (most of OZ eroded into the sea ages ago ) so maybe this might have some relevance as well
  19. G'day all, Went to the local tip shop today and found an old car propane cylinder about 15" in diameter by 30" long. I bought it thinking it would make a good Fogg style forge. After emptying the remaining gas and filling with water, (mucking around with old gas cylinders always makes me nervous! ) i CARFULLY drilled a hole in the side to see how thick the metal was, about 3mm or 1/8" my question is will this be thick enough with 2 or 3 layers of kao wool to withstand the heat of a welding forge without distorting from the heat? or should i use it for something else and just buy some large diameter steel pipe with heavier walls? thanx in advance
  20. That would be great mate. no hurry though, my press is a bit of a long term project as i need to build a shed to put all my kit in anyways! hope you have a good show in atlanta. have to drag my sorry bum over to the states one day and see the sights.
  21. Thanks, Guy and Peter for your replies. Peter, any pics of your "window frame" press, sounds intrigueing.
  22. G'day all, I got my ram and pump from surplus center the other day, and am now looking for the steel to make the frame out of. I have decided to make a H frame press like the one in Mr batsons book (using angle iron for the uprights) except with the ram on top. My ram is 6" bore so should push around 30-35 tons my question is this, would 3" x 6" x 1/2" thick angle be strong enough to withstand the tensile force of 35 tons with the appropriate saftey margin? does anyone know the breaking strain of this ange? or can anyone suggest a beter size angle to use. everyones input would be greatly appreciated. thanx in advance. cheers!
  23. G'day everyone, Just wondering if anyone out there can help me answer the question: can stainless steel be gun blued? (chemically) thanx in advance P.s Sorry if this topic is in the wrong place
  24. Finally ordered a 6 inch ram and 16 GPM pump from surplus center today just one question remains, should i go the c or h frame configuration? as far as i can see both have their merits, C frame has ease of access, H frame is more rigid etc. Any input / suggestions anyone has about these styles of press would be appreciated as i'm at a loss as to which design to use. thanx in advance p.s i will post pics of my press as it is built thanx once again
  25. G'day guys (and girls ) Happy christmas etc. Came across this in a local machinery shop catalogue and wondered if it would be any good for grinding blades? Disc sander DS 300 @ this site: Don't know if aluminium disk would be as good as a steel disk. What is everybodies opinion of how thick a material the disk should be machined out of? Also can anyone tell from the advert if the motor can be run in reverse? Any help would be greatly appreciated. Cheers!
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