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About Jspool

  • Rank
    Senior Member
  • Birthday 03/20/1956

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  • Gender
  • Location
    Port Orchard, WA
  • Interests
    Blade smithing, wood turning, photography, music, fishing

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  1. bicycle chain kitchen knife

    Very cool. That’s the most steam punk knife I’ve ever seen! I’ll have to give that a try!
  2. What Salem said, plus you can program the vfd to start the motor slow with no surge thus eliminating the need to double your amperage for startup.
  3. Aren’t grader blades made from T1?
  4. Hugh mentioned that, but that was his his dated opinion limited by not understanding that a VFD would simply kick out if the motor gets too stressed. Its a parameter thats easy to set up, and nothing blows up. I admit that a v belt drive is attractive as it would just slip. I have seen lovejoys that do this as well. When you suggested looking at the plans I thought I missed where he mentions what parameters to use if you go the route of a geared reduction. At this junction, with the feedback I am getting, and looking at other builds (my there are a lot of them) a 60:1 1.5hp 1725 3ph setup run of a vfd should do the trick. I can slow the 29rpm down to 22rpm with the vfd if needed. Frosty, as much as I appreciate your help, it just reminds me that I should have paid more attention in school! Wish I could understand that. I do know the torque requirements, and the target rpm for the 2” roller, so went with that.
  5. The info package I received didn't cover geared speed reducers.
  6. I made the mistake of previously posting this in a sticky. Not sure if that was the correct thing to do or not. I purchased plans, and am in the process of having a Mcdonald rolling mill made. Rather than chain and sprockets I want to go with a motor and reduction gear box that I have seen others do. What I can’t seem to extract from the WIPs I’ve read is what HP motor and what speed reduction is required. Any help with that, and a good surplus source for motor and reducer would greatly appreciated. Another idea is to utilize a hydraulic motor as I have hydraulics plumbed in the shop. Would a system putting out 8gpm be able to power the rolling mill or is it better to stick with electric? Other thread moved/merged into this one., there is no reason to have 2 threads on same thing,
  7. Difficult, but it can be done for sure if your metal is clean and you get it hot enough. Look at some YT videos to get an idea of what color it needs to be to weld. Pretty hot.
  8. Thanks for this Glenn. I’ve been a member here for a while and only now have seen this section. Wonderful and amazing reference and process material from Hofi! I am grateful.
  9. Damascus chefs knife (pic heavy)

    Will, As a maker (hobbiest) I know that that kind of result is frustrating as hell. Especially after the handle is on. I've had a couple billets have bad spots on them that wouldn't etch out until I either resanded the entire blade down or in one case annealed it and requenched it. I tend to do a lot of in progress etching every step of the way. Otherwise its quite a nice blade and well done.
  10. The Temple Boxer

    Nicely done blade! Is that durian fruit? If so, your pictures stink!
  11. Super steel/Damascus/

    Can it cut?
  12. A couple of recent kitchen knives

    Nice work. Very pleasing form, and excellent fit and finish. Good job on the damascus. Did you pin or solder the bolsters?
  13. 500 layer laddered chef's knife

    Beautiful blade. My damascus is usually at 448 layers and is fine also, but I understand what you are talking about withe the shimmer, or chatoyance. Great job IMO
  14. power tools for knifemaking, yes or no?

    One thing to keep in mind when comparing smiths of today as compared to yesteryear is the apprentices. Most accomplished smiths had one or two apprentices who would yield sledge hammers at the anvil under the direction of the older smith. With that era gone, the necessity of power hammers increased. I love forging a blade by hand, but with an aging back, and raw stock like 1 1/8" round Cruforge V steel to work with, I don't know where I'd be without my air hammer. Same thing with welding up a damascus bilet. I wouldn't even attempt doing that without my hydraulic press. Unless of course I had a couple of apprentices yielding sledge hammers!
  15. Bob Kramer knife maker raw craft episode.

    Excellent stuff