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Alex Roy

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About Alex Roy

  • Birthday 11/11/1987

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Profile Information

  • Gender
    Male
  • Location
    Manchester N.H
  • Interests
    Welding (TIG/Stick), Woodworking, Brazilian Portuguese, Poetry, Women & Food. (Do I really need to say bladesmithing?)
  1. Alex Roy

    Working on Hydraulic Press Design

    Alright guys, I am about to purchase a rebuilt 10 HP single phase Baldor, 1750 RPM. I am going with a single stage pump. My question for you guys is: Should I try to maximize the linear speed of the ram at the cost of hydraulic force? My calculations show that I can develop 20 tons of force at 2000 PSI (5 inch cylinder), moving at 1.41 inches per second. I could also run at 25 tons of force at 2500 PSI, moving at 1.18 inches per second. I am still doing calculations to determine if the increase in ram speed will offset the heat conduction from a larger force with a slower ram. Let me know what you think, any input will be helpful.
  2. Alex Roy

    Working on Hydraulic Press Design

    I am considering on going with a single stage pump to keep heat in the billet longer. The filter is a must, I agree. I am probably gonna stick with a 5 in cylinder. As far as the quick change design, I will work on that. I can calculate thermal expansion and work it into the design as well. I plan on doing a lot of design iterations, as it pretty standard. I am feeling like I will likely go with an H frame because I want to maximize rigidity. Also I plan on building in adjustments into the ram guides and so and movement can be rectified easily. I'm gonna work Statics, Dynamics, thermo, fluids, fabrication, machining, metallurgy into one project. Certainly will be fun. Please keep the comments coming, looking forward to hearing from you guys
  3. For entertainment purposes I am working on a press design but would like to get some info from people who use them. I will not be building this for some time, but I have plenty of fabrication and design experience. First I keep reading that the linear speed of the piston should be atleast 1 inch per second. What would be optimal, since I am designing the press from the ground up I have total control over the feed rate, force and pressure. Would 2.15 inch per second be good or would faster be better. I understand that the faster it feeds, the less the steel will cool from die contact, but is there a diminishing return as some point? At which point does the feed rate become so ridiculous that it is hard to control? I would like to run a few experiments to quickly determine what the feed rate of peoples press' but that is entirely up to the individual. Anyone interested in testing this info please send me a PM. I am mechanical engineering student so I have spreadsheets up and working. I intend to fully document the design and building of the project for my portfolio and for entertainment. Some design considerations include: -Quick change dies -Shielding for all plumbing, /w hinges for easy access. -Build in heat exchangers on the reservoir ( maybe with fans) -Adjustable throat/work surface -Shielding for operator -Sound dampening -Throttle adjustment for non forging use (pressing bearings / bending etc.) I know I've gone on a rant with this one. But any specific info would be helpful.
  4. Alex Roy

    Need help with decarb

    Hey guys, I have not posted for a few years and am actually looking for help with a non knife related topic. I've got a summer internship at a university and I was asked to do the heat treatment for some A2 triangular parts. The parts will need to have pretty close tolerances and I know that A2 has high dimensional stability in heat treatment and that is mills relatively well in anneal condition. So that is the material we are working with. My question to everyone is how would you go about minimizing decarb? The parts will be roughly 1.25 X 2 inches. They will be hardened in a brand new induction furnace with ramp and dwell functions, as well as +/- 1 degree C accuracy. The furnace is naturally ventilated (Open to atmosphere). My thought on the matter was to buy stainless foil, pack ash into the foil and seal it as best as possible. Or using stainless foil with borax or boric acid (anhydrous) inside. The parts need to be surface ground after hardening so the less decarb the better. Any thoughts or ideas would be greatly appreciated.
  5. Alex Roy

    Wanted: Beaudry Clutch images

    I would greatly appreciate pictures and measurements of the clutch, thank you.
  6. I'm gonna be taking machine design and for a project I'd like to be making a pseudo replica of a #4 Beaudry Champion, likely 1/4 scale. I'm having a difficult time finding good images of the clutch mechanism. If anyone know where to look or who to talk to, that would be a great help.
  7. Alex Roy

    100lbs power hammer craigslist nh

    All I need money
  8. Alex Roy

    Crowning pulleys???

    I'm building a KMG clone and I'd like to know what people have for a crown in both there Idle pulley and drive pulley. If anyone could measure or let me know what the amount of crown the pulleys have. Thank you.
  9. Being the fact that Iron (steel in this case) is Allotropic. I am aware that there is a sudden release of energy during the transformation from one lattice structure to another. My interest is that I would like to find a video of the visual increase/ decrease in light being emitted from a piece of steel when it changes from BCC to FCC. Also, if anyone could tell me the technical term for this emitting of light during the transformation, that would be very helpful. Sorry for my long winded appeal for help. Long and the short of it is, if anyone could send me a link of the transformation or tell me what it is called so that I may search for it, I would be very thankful. Appreciate the time.
  10. Alex Roy

    A-2 or D-2

    Hey guys, havent posted in a while. I had surgery on my right arm and it still has not improved. But I've decided Im going to just do stock removal in the time being. So my question for all of you is, what do you prefer as a good, rugged steel, A-2 or D-2. I have selected these too for thier reputation for good edge retention, and the fact that they are easily air hardened. Secondly, since I do not have to hit it with a hammer, I figured I'd work with a richer alloy. So opinions and ideas would be greatly appreciated Thank You. Secondly, I was wondering where you guys get your tool steels.
  11. Alex Roy

    Chat Alert!

    Im on right now
  12. I like the general overview he did and the way he speaks plainly, doesnt try to jazz it up. Very elegent, simple and useful blades.
  13. Alex Roy

    Taiwanese swordsmith video

    The whole phosphorus adding thing was rather back asswards. But it was mildly entertaining and yes, the narrator was a complete fool. Thanks Alan
  14. Alex Roy

    Steam hammer

    That damn thing is insane.
  15. Alex Roy

    Ebay Surface Grinder

    Look out guys, its 3 Phase.
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