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Posts posted by DClaville

  1. Installation, use, and maintenance of an acetylene generator are, however, subject to strict safety measures because acetylene is an extremely dangerous gas which readily explodes at a wide range of gas to air concentrations.

    play safe

  2. stand that weight on end and just use it.. you will learn loads and can make most things on it the I-beam will only give you bleeding ears and less work done. 

    you dont need a large surface as long as it is a bit larger den the face of your hammer then its enough what matters it the mass and that it doesn't move around 


    get hammering and play safe good luck

  3. thanks for this idea have been thinking about a usable and fast spacer set for some time but this is just perfect


    have to make a load of nips for these next time I got a laser cutter handy, need at least one for every vise 

  4. google Iron smelting and read from there ;) next on the list is metallurgy difference between steel and iron and other metals 


    its a fun hobby but not something you will understand and know all about in just a few years time 


    as a side note, your avatar pic is already used by at least one other member on here makes it confusing for us who are bad at remembering names 

  5. Hi welcome to this great site


    thanks for sharing this info it is very interesting 


    it would be very fascinating if you could do the same test with some high carbon steels like 1095, 1080, O1 or such if you could get your hands on some bits of on of them


    these steela will also burn at much lower temperatures and with more sparks 


    this is steels commonly used by knifemakers 


    If i didn't live on the other side of the pond I would be more then happy to send you some known steel bits to test out, maybe another knifemaker who shares your continent would be as kind ?

  6. Hey Andy


    seeing your limited space I would recommend a moveable vice stand so you can shove it out the way when not needed 


    your floor is limiting as well so a stand with a largeish plate to sit on the floor that you will stand on when working on the vice seems a good solution so that you dont twist it around 


    here is how i build mine but you can go with wood or what you can get your hands on it is normally standing up a wall but i drag it out the middle of the floor when needed 



  7. one idea to be able to make the case of the machine totally air tight is to have it filled with mineral oil it will disperse the heat and and it have been used in highly over-clocked computers and such but will would mean a mess if something broke but maybe ??


    it a really cool project you guys have going here good luck with it i hope to be able to get such a toy one day how ever little i may need it ;)

  8. if the cylinders are the same size and the flow to both are equal, same length and size of hoses and pipes it should not be possible for them to get out of synch unless the work is places so far out that one ram can move with out the guides or work raising the pressure in the one ram


    lets say one is pressed down about 0,01mm more then the other the pressure will be higher in that one as the resistance will be more then the other ram will have to move to equalize the pressure


    so the way I see it if you have a press with two cylinders placed apart some, so the dies surface is between the two cylinder rods and just to go for over kill there also is some prober guides you are home safe that also makes it possible to have a press with downward motion and at the same time have the cylinders in the bottom part of the machine?


    if you imagine a half of a 4 post press with the two posts being cylinders so the press is pushing on the pull stroke of the cylinders.


    that is how I am planning to build my press with the two long 5" cylinders I got, calculated to end up with 38tons

  9. that is a very impressive forge shop 

    the hammer table is cool but IMO it takes up way too much space you could have the same tool well more tools really on about 3x3feet of wall space with some easy to make racks

    and after working for a few years the table is going to be too small anyway for the tool you have made by then ;)

    also like the stove keep planning on getting one my self.

  10. hehe thanks Sam

    her name is Heidi B)

    so the next chapter

    In the two weeks I was running the hammer testing it and playing around I soon got tired of having to remove forge scale of the dies and when I get spring swages and other tools the problem will only worsen, so inspired by videos of industrial forging I was thinking about doing something where I could blow air on the bottom die
    I looked and finally found a air switch I could use for free made some changes to my air lines in the shop and ran some 6mm air hose and bend a bit of 6mm copper pipe and away I was



    here is a little video of the test blow?

    I was very unsure of the placement of the switch but decided to just try it out there but already now I am thinking about moving it so i can use it with my right foot so i dont have to make a half step while I am using the hammer if I want to blow the dies clean.

    have meanwhile also got a real foot switch that I will use

    next was an idea I got from Owen bush who have a 2CWT Alldays & Onions to build in a ball valve on the compressor piston that can be opened to ease starting the hammer and also might be used to fine tuning the hammer for light blows but haven't played around much with it since I build it in

    I took off the top plate for the piston and drilled and tapped for 1/2" pipe tread

    I chose the top plate as I wanted to be sure not to have the hole where the ram touches the inside bore
    It was a easy addition to make only hard part was lifting the top plate most have been about 30kg. and getting it up over the bolts and all while on a folding ladder almost feel down with it :unsure: haha

    next was fabricating a chain guard that will also shield off the motors openings from forge scale and grinding dust
    I am using 2mm steel plate as that is the thinnest we had loads of at work it is also much easier to get a strong structure

    started bending the top plate by hand in place making two fastening points as a start as well

    then one side plate

    then made a slot for the axle

    and cut out a section that will be folded down where it goes from wide to slimmer around the big chain wheel


    and that is how it looks right now middle November 2012
    Will finish it tomorrow

    some other things I plan to make is the before mentioned bracket to hold the start/stop switch, a treadle safety bar and the modification of the scale-blaster
    if you have ideas of things you think I am missing please let me know