Results 1 to 11 of 11

Thread: homemade waterjet cutting

  1. #1
    Join Date
    Feb 2010
    Location
    Altoona, IA
    Posts
    2,590

    homemade waterjet cutting


    ADVERTISEMENT
    My father-in-law has worked for decades in the oil and road industries. He currently runs a research lab at Iowa State University. He's pretty good at what he does, and I believe him when he says he has done something in the past. I asked him if he had a waterjet table at his shop and he said they don't. He then went on to explain how they used to cut 3/8" steel in the field back at the oil wells. They would use a 2500 PSI pressure washer and garnet sand poured into the stream after coming out of the nozzle. A far cry from the 9000 PSI they use to cut bridges, but still in the realm of feasible. They could cut steel with no problem in a matter of minutes this way. He said the cut was about 1/4" wide, obviously much more coarse than we're used to, but still an intriguing idea. My pressure washer is only 1300 PSI, but I know a guy. . . .


    Has anyone tried this?

  2. #2
    Join Date
    Dec 2010
    Location
    Redwood City, Ca
    Posts
    1,154
    The theory behind this is sound, since the original idea was if a small gently flowing stream of plain water can cut, and shape rock, then a high powered stream infused with abrasive can cut anything. Just know that your fittings will disappear/be worn away.
    90% of being smart, is knowing what you're dumb at.

  3. #3
    Join Date
    Feb 2010
    Location
    Altoona, IA
    Posts
    2,590
    I think he was talking about pouring the garnet in after it left the gun, otherwise your fittings would be clogged quickly.

  4. #4
    Join Date
    Apr 2010
    Location
    Knoxville, TN
    Posts
    18,744
    We're not building bridges here. Professional water-jet services are so precise (within a thousandth of an inch, not 250 thou) and affordable (a few bucks or even pennies per blade, depending on volume) that I see no reason to home-brew it. I'm certain you could make much quicker, easier and cheaper cuts with a $20 angle-grinder, when dealing with typical barstock that knifemakers use.
    Terrio HandMade Knives subforum

    Beckerhead # 350

    Member, AKTI and KnifeRights

  5. #5
    Join Date
    Mar 2006
    Location
    Dutchman living in Germany
    Posts
    2,673
    If the cut you get is 1/4"wide I wouldn't bother and just use the angle grinder.
    I get thinner cuts with that.

  6. #6
    Join Date
    Feb 2010
    Location
    Creek County, OK
    Posts
    4,187
    hmm, I have a 3800psi 11.5hp waterblaster that has a wet sand port.... I know I can blast a hole to china but now steel?? sweet
    BeckerHead #13

    "I am not a Number, I am a Free Man"- Maiden

    "The moments we share today, Inspire the stories we tell tomorrow"

  7. #7
    Join Date
    Aug 2004
    Location
    Norfolk,Va.
    Posts
    19,127
    For cutting a 6' piece of rail road iron into an anvil, maybe...for cutting blades from bar stock....why would you.

    It would cost a lot just in the garnet or SC abrasive.
    Stacy E.Apelt
    It is better to die fighting evil than to live under it.

  8. #8
    Join Date
    Feb 2010
    Location
    Altoona, IA
    Posts
    2,590
    Yes, I know waterjet service is affordable, but that's not why we're here. It's the spirit of doing it yourself. If we wanted to take the easy way out, we'd all just buy pre-cut blanks. It's the spirit of saying "Yeah, I cut this in half with the garden hose!"

  9. #9
    Join Date
    Aug 2004
    Location
    Norfolk,Va.
    Posts
    19,127
    OK, post photos and keep a log of the expenses.
    Stacy E.Apelt
    It is better to die fighting evil than to live under it.

  10. #10
    Join Date
    Apr 2010
    Location
    Knoxville, TN
    Posts
    18,744
    Quote Originally Posted by bladsmth View Post
    OK, post photos and keep a log of the expenses.
    Yeah, exactly. I hate to rain on anyone's enthusiasm, but there's a point where it just gets silly to reinvent the wheel.

    Next, you'll be combing the beaches looking for black sand... oh, wait... never mind.

    Terrio HandMade Knives subforum

    Beckerhead # 350

    Member, AKTI and KnifeRights

  11. #11
    Join Date
    Jan 2011
    Location
    Bayfield, CO 7500 feet elevation
    Posts
    12,625
    I usually use knives from my current order run to carve the next ones out of steel.
    www.fairlyknives.com
    DFK Bladeforums Forum
    Craftsmanship Without Compromise DFK ------ Daniel Fairly Knives Connoisseur Grade Cutlery ----------------------- These go to eleven!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •