Recent content by Taz575

  1. T

    Playing with my laser.

    Ok, so I am running my lasers on a desktop CNC control board. I found out my CNC S value (spindle speed) was 10,000, but my laser S value was only 1,000. Oops!!! My lasers were really at 10% power when set to 100%! And I had my X speed at 500mm/min and y and 400mm/min, so that was it's max...
  2. T

    Playing with my laser.

    Picked up a 2W IR laser and started playing with it! It's the Sculpfun IR 2 that was on sale recently and I mounted it to my Anolex CNC machine. I found out that the interval makes a HUGE difference!! The IR beam is .03mm wide, so I set the interval as that and kept getting gold color. I may...
  3. T

    Are these real ???

    Micarta will patina. The darker color is the outer bark that reacted to light exposure over the years. It's real.
  4. T

    Etching Damascus

    I got some GatorPiss a while back. I was using diluted Ferric Chloride, but wanted to try something different. I usually take my blade up to 800-1500 hand rub before acid etching for damascus. With Gator Piss, I can get visual contrast quickly, but the steel surface is still smooth and shiny...
  5. T

    carbide straightening

    I leave the mill scale on the blades during the HT and the first tempering cycle (I do a 300-325 snap temper on everything after the quench/cryo). Then I straighten, clean up the blades and do the rockwell testing and re temper as needed, all before grinding bevels. The mill scale ensures that...
  6. T

    HT oven build!

    Ken, I sent you a PM with the Excel Spreadsheet cut and pasted into the message. I couldn't upload the actual Excel file here. If anyone else wants it, let me know!
  7. T

    Arduino, thermocouple, firebricks, and heating elements?

    $1200 roughly. I have an excel file somewhere, need to find it!
  8. T

    5 min epoxy

    Bark River uses a loctite glue and activator, that may be faster?
  9. T

    5 min epoxy

    Sometimes adding hardener doesn't speed up the cure time, depending on the epoxy. If adding heat, I would not go over 100 degrees. I have had epoxy fail when I got it too warm before. Most epoxies are 150-212 max temperature, so 120 degrees is pretty close to the lower end.
  10. T

    5 min epoxy

    JB Kwik Weld sets up pretty quickly. It's a bit more than 5 minutes, but I usually start shaping the handles around 30 minutes later. It will set up quicker if it's warmer, so I often put the knives in the bathroom with the bathroom heat running to help it harden up faster. Even without the...
  11. T

    Growlers for Cryo - Recommendations?

    Very nice!! Wharton Taylor makes nice stuff!
  12. T

    Arduino, thermocouple, firebricks, and heating elements?

    Yeah, I built a 27" long, 7" wide, 6.5" tall chambered oven with a WiFi Ramp/Soak PID, element kill switch, door shut off switch, etc for around $1200, not including my screw ups! Here are some pics of my build list. I went with RedBeard's wiring method/schematic and Jarod Todds design using...
  13. T

    Growlers for Cryo - Recommendations?

    Yeah, the ones in the picture on the blog are poultry sized. I have done some with 5" long blades and others with 18" long blades for cows. These are 18" x 2" blades in 1/16" Magnacut, 62 HRC, 24" OAL. Customer wanted heat treated and rough ground blanks for his buddy to finish off and do...
  14. T

    Growlers for Cryo - Recommendations?

    And remember, if we use a lower austentizing temperature, we have less retained Austenite. The RA adds some toughness to the steel as well. Using a higher Aus. Temperature means higher hardness, but more RA which the sub zero helps reduce. If I'm going for 62 in magna cut, I can get there...
  15. T

    Growlers for Cryo - Recommendations?

    With the speed rail, they usually have some gaps in the welding of them, so they're not watertight. I'm not sure if they'll be much practical difference with a dry ice slurry immediately after the blades get to room temperature, or liquid nitrogen, or liquid nitrogen over dry ice. I dont know...
Back
Top