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  1. If you use a pressure cooker, and if you find a way to adjust the regulator weight, I think you can have very stable and accurate temperature control from 212F to 250F, possibly to within one degree. dcarch
  2. dcarch

    Click and Grow

    Last year's. dcarch
  3. You can find PIDs which can take over 1000F. Try ebay also. dcarch
  4. "Accurate" may not be the total temperature control personality of a cooking appliance. You probably would also need to know the temperature control range. For instance, your oven may be very accurate to keep temperature from 200F to 250F. dcarch
  5. dcarch

    Click and Grow

    May be you are talking about mercury vapor lights. If the outer glass is broken, the bulb inside will send out harmful UV rays. LED chips can only generate one single frequency (color) of light. Actually there are no white LEDs. White is generated by using phosphors or using three color LEDs in combination. dcarch
  6. dcarch

    Click and Grow

    By the time I finish making my 4 LED lights, I will have a total of 300W x 4 = 1,200 watts of light. Looking forward to nice seedlings for the coming season. dcarch
  7. My favorite - Ananas Noire dcarch
  8. I will. Not for a while. I am busy building a few high power (300 watts each) COB LED grow lights. Got to get them done soon to start seeds. dcarch
  9. Yeah. I have improved my system. dcarch
  10. I don't buy seeds on eBay. Too many fake seeds. dcarch
  11. Here is an ultrasonic humidifier I made for my hot/cold smoker. The noise you are hearing is from another machine running in the background. Remember, you can't hear ultra sound. :-) The water looks like it's boiling, but it's actually ice cold. dcarch
  12. I will be in that area in the next few weeks. Will give it a try. Re-balanced your picture's color. dcarch
  13. dcarch

    Riveted handles on cookware

    The chef screwed up the spinach recipe. dcarch
  14. dcarch

    Riveted handles on cookware

    I have always thought that spot welding works mostly for thin metals. I wonder if induction welding can work for welding handles to pots and pans. dcarch
  15. dcarch

    Monetising empty dining rooms

    May be. It is very expensive or impossible to install floor mounted power outlets. I will be surprised that in commercial leasing that a lease does not very specifically stipulate what the space is to be used for. Also, fire code is very different for "places of assembly" and for office use. In reality, Landlords may not want to have tenants go out of business, and DOB seldom re-inspects unless something happens. dcarch