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Heat Treat Oven Questions

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by rideslow, Mar 19, 2019.

  1. rideslow


    Sep 10, 2014
    So I'm looking at an Evenheat KH414. There is available options for solid state relays. Are these worth the extra money? Also, are you guys happy with the basic STP 3 key controller?
    Should I consider the 18 inch oven instead, even though I dont ever see myself making a knife that long? Am I missing any thing? Im just a guy with a cool hobby at this point.
  2. E.Carlson

    E.Carlson KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Mar 28, 2016
    I can't speak to the solid state relays, I didn't get them. We'll see If I regret it. I would at the very minimum get the 18 inch oven. You don't want any part of the blade too close to the front or back, and why limit yourself? I also went with the TAP controller. I think the size of the oven and the best controller are key and worth the additional cost.
    Last edited: Mar 19, 2019
    Grayzer86 likes this.
  3. Joker66


    Apr 20, 2014
    Last year I bought the LB 22.5. It is longer than I really need, but better too long than not long enough and the additional cost is not that high overall.
    The LB series comes standard with the solid state relays, and the temperature control is very tight.
    I also got the TAP controller. I have used other ovens with the 3 key controller, but I find the TAP to be much easier and more intuitive.
    I ordered mine with the Burke modification, which is just more outside insulation.
    After using the oven for a few months I also ordered the loud alarm since I found out my hearing isn't as good as I had thought.
    Overall I'm really pleased with the oven and it gets a lot of use.
    I figured buy once, cry once.
    Scaniaman likes this.
  4. Larrin

    Larrin Gold Member Gold Member

    Jan 17, 2004
    Better idea to get the 18 inch, in case you ever do decide to make a longer knife, and so that the "uniform zone" is longer for shorter knives. Also the cost difference is not that much.

    I have the rampmaster controller and I like it. It's nice to not have extra buttons for a little more control. The TAP is even better of course.
    Grayzer86 likes this.
  5. jdm61

    jdm61 itinerant metal pounder Knifemaker / Craftsman / Service Provider

    Aug 12, 2005
    Since you are buying an Evenheat instead of a Paragon, there is probably no need to tell you to buy the one with the wider chamber. That is the one thing that I regret about my 24 inch Paragon. Chamber is only 5 inches wide.
  6. Teppojutsu


    Jan 18, 2015
    Im getting ready to pull the trigger on a jen ken airbath 30 with tap controller and solid state relay

    Its going to hurt price wise but im going all in!
  7. John mc c

    John mc c

    Aug 23, 2018
    I just finished my 18"er and a smaller blade down at the end of it completely surrounded by elements and away from the door just looks right
    Not sure about my specifics but I got a SSR and simple 3 button controller and it works like a dream,quick ramp up near temp then gentle ease on the last few degrees
    I'm as happy as a dog with 2 mickeys
  8. rideslow


    Sep 10, 2014
    Thanks! I appreciate all the info. I guess it will be an 18 inch oven for sure. Im thinking the 3 button controller will work for me too. Now I just need to decide if the solid state relays are that much of an advantage.
  9. John mc c

    John mc c

    Aug 23, 2018
    I know little about electrical stuff but the ssr is almost essential
    It smoothly gets you up to temp with no overshooting
  10. rideslow


    Sep 10, 2014
    Do you have a suggestion for where to order an Evenheat oven?
  11. Larrin

    Larrin Gold Member Gold Member

    Jan 17, 2004
    USA Knifemaker and Kiln Frog have the best prices I have seen.
  12. Storm W

    Storm W

    Feb 19, 2019
    The knife talk podcast has a promocode for evenheat and its an fun listen.
  13. DeadboxHero

    DeadboxHero Triple B Handmade Knives, Big Brown Bear

    Mar 22, 2014
    Trugrit is cheaper.

    Get the solid state relays.
  14. Stromberg Knives

    Stromberg Knives KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Jan 3, 2015
    I agree. I really like my Paragon 24 inches, it's built like a tank and keeps most of the heat on the inside, which is nice. Unfortunately when I bought my oven they didn't have a wider version available. But nowadays they also have a double barrel version which is 11 inches wide.

  15. jdm61

    jdm61 itinerant metal pounder Knifemaker / Craftsman / Service Provider

    Aug 12, 2005
    Same thing when I bought mine. I got it in like late 2007, so the 24 might have been fairly new then. i didn't really think about the width until later.
  16. scdreger


    Sep 3, 2008
    I couldn't find it. I see their promo code for Combat Abrasives and AMK, but not Evenheat.
  17. Storm W

    Storm W

    Feb 19, 2019
  18. golfer1


    Nov 24, 2016
    The one thing I like about the Paragon is you can touch it without being burned at any temp. It is just warm to the touch and very comfortable to work around in the warmer weather. It uses the exact same upgrade controller as Evenheat, same company, and the double barrel 24 is a great combo to work with. The door on the Paragon is also hardier, so glad I got it instead of evenheat.

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