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  1. MTBob

    Resp-O-Rator R.I.P.

    As a knife maker with a beard, for the past 8 years I've used one of Jim Durxbury's Resp-o-Rators (https://duxterity.com/resp-o-rator/). I've modified the unit to accept 3M filters and replaced the plastic cross arm. This filter has served me well, filtering particulates much better than my 3m...
  2. MTBob

    Stencils

    How do you clean your stencils? I've been spraying Windex on the stencil and then a gentle spray of water until I don't see any gunk in lettering. I've been using Bo Gropitch for my latest stencils.
  3. MTBob

    What to do when the number of knives exceeds quench capacity?

    Hum... I knew you guys would come up with some good thoughts. I was beginning to think just pulling them one at a time & quenching would work. But, the temperature will definitely drop each time a knife is pulled. (I wonder how low it would go - need to a test and see how low it goes)...
  4. MTBob

    What to do when the number of knives exceeds quench capacity?

    I'm heat treating a number of knives using AEB-L with Alpha Knife Supply's HT recommendations. I want to do them (4 or 5 large blades) as one batch in the oven. Do any of you have experience extending the duration of the last heating hold point of 1975F? AKS recommends holding this last...
  5. MTBob

    Riverbed Knife Pics

    Well done. I like your use of stacked leather & bark.
  6. MTBob

    Hello from Brazil!

    Beautiful work! Welcome to Knifedogs.
  7. MTBob

    Welding (cheap) Machines

    The interweb has a bunch of welder machine recommendations. One of my favorite guys is Jody Collier that has a ton of high quality videos on weldingtipandtricks.com. His advise addresses MIG /Stick and TIG. It boils down to how much you want to spend for the type of welding you'll do. More...
  8. MTBob

    Adding Argon to AEB-L HT Pouch

    I'll have go get my WD40 out of the boat. The only thing it'sgood for is spraying on fishing lures... and it works good for that! But I'll give the HT idea a try, that may be the second thing it's good for.
  9. MTBob

    Adding Argon to AEB-L HT Pouch

    Good questions. I've never had much decarb on AEB-L. But, depending on whether I used a paper insert (or how much paper), I would get varying degrees of black surface coating. That discoloration would grind off. The Argon gas seems to have eliminated the dark discoloration and added a...
  10. MTBob

    Adding Argon to AEB-L HT Pouch

    Using inert gas (Argon mostly) is a common feature with many HT ovens. The benefit is a reduction or elimination of surface scaling. I opted to not add that feature when I got a Paragon oven because filling the entire chamber with gas is costly and, in my opinion, doesn't make sense for my low...
  11. MTBob

    Blanks

    Just curious, why did you buy that alloy of steel?
  12. MTBob

    Lathe Drive Belt Replacement - Pt. 2 Details

    As requested, this posting describes the details of my initial posting outlining replacement of the flat drive belt on my lathe. I used this belt replacement method since I did not want to disassemble the lathe to install a complete loop belt. Here's source of supply information. The belting I...
  13. MTBob

    Lathe Drive Belt Replacement - Pt. 1 General

    I finally replaced a very very old worn out drive belt on my lathe. There are a bunch of YouTube videos that describe disassembly of the lathe headstock and drive pulley to install a new belt. Another approach to replacing a belt is the use of connecting staples to join the ends, or lacing the...
  14. MTBob

    Mini Lathe - Good deal?

    Yes, that Jet lathe would have been a good buy. Keep looking, there's more!
  15. MTBob

    Mini Lathe - Good deal?

    Good plan!
  16. MTBob

    Mini Lathe - Good deal?

    Sean, here are some brief comments: Pluses: Seems to be in reasonable shape, relatively clean The Aloris style (OxA brand) quick change tool holder is helpful, has multiple attachments The four jaw scroll chuck looks good, Harlingen is a known brand The four jaw independent chuck can come in...
  17. MTBob

    opinions wanted.

    Here's my opinion: - fit and finish look good, - overall blade design reflects a more modernistic shape, which is an interesting style, - I like the rounded champher on the handle, However: - the handle extends out over the toe of the blade above the bottom of the plunge line, crearing...
  18. MTBob

    Mini Lathe - Good deal?

    Sean, just as a follow-up comment - that size and style lathe is mostly suitable for cutting softer material like brass, aluminum, wood, and small steel pieces, without much repeatable precision. There just isn't enough strength in the lathe bed (ways) to handle heavier material. However, for...
  19. MTBob

    Carbon chrome?

    I would guess it's just a casual way of saying it is some kind of stainless, perhaps used as marketing jargon. Any of the many variations of stainless steels will have some percentage of carbon and chrome in it. In general stainless steel will have a chrome content over 12%, or so. The term...
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