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Thread: Vaporizor for Varroa Mites DYI

  1. #1

    Join Date
    Oct 2014
    W. WA
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    Vaporizor for Varroa Mites DYI

    Vaporizor for Varroa Mites  DYI-060.jpg

    Recently it became legal to use Oxalic Acid (OA) in our bee hives as a tool against varroa mites. There are several ways of applying it but the best for both mite control and the bees is to vaporize the OA with a 12 volt wand stuck in the bottom of the hive. Buying a vaporizer was spending and looked and the device looked ripe for building one of our own. I found several ideas cruising the net. The biggest catch was a way to heat the head of the wand. Someone suggested that a glow plug from a diesel engine should work just fine. A quick trip into town and a $10.00 bill resulted in an Autolite 1110 glow plug used by Chev 1973 Diesel engines. Now that I had the heat source I could design the rest of the wand.

    Rooting around in the scrap pile I dug out a block of 6061 Aluminum Block about 2"x5"x3/4" to use as the head for this vaporizer.. The Glow Plug had a 10x1MM thread. I knew that I did not have a tap in that size and a check of the local hardware store did not have one either but I was able to by a couple of hex headed 10x1x40MM bolts. Since this head block was aluminum I resorted to and old trick of making a tap from a bolt. See the Thread on "A quick tap to save the day and keep the mites away " That I post also today for more details.

    Crudely Marking out the pocket that we need to mill out on the face with a felt tip

    Vaporizor for Varroa Mites  DYI-050.jpg

    Milled out the 0.5" deep pocket with a 1/2" 4 flute end mill on the Mill/Drill took only a few minutes. The pocket is 1 1/2 long by 3/4 of an inch wide roughly and a 1/2" deep.

    Vaporizor for Varroa Mites  DYI-052.jpg

    Setting the block on end I drilled the hole for Glow Plug, Drilling a 13/64 hole 1 3/4" Deep from the left hand side of the block as a pilot and to contain the heat element for the glow plug. Following up I redrilled the hole with an "R" drill 3/4" deep to tap for the 10x1MM thread. I also drilled & tapped a 3/8x16" x 3/4" in the center for the wand handle rod. The other hole was done in incase I needed a 2nd heat source.

    Vaporizor for Varroa Mites  DYI-044.jpg

    After tapping the holes I attached the related parts. The 3/8 threaded rod was about 23" long, threading into the center of the block and putting a 3/8-16 hex nut to lock it in place. The Glow plug fit like a dream and did not need a lock nut. For a handle, I found a 20 1/2 piece of 1" conduit. I crimped the conduit onto the locking nut and then pressed the tube oblong to make all but the last 8-10 inched 3/4 of an inch high. I snaked the positive lead of the 13 volt wire down and through a hole that I ground through the conduit just above the male plug on the Glow plug. I crimped the female connector on to the wire, slid a piece of heat shrink tubing over it and then connected that wire. At the other end, I ground a relief for the wire to come out of the tube and then stripped off enough of the negative wire to wrap around the 3/8" rod. Placing a flat washer over the rod, I wrapped the wire around and finished off with a dome nut. Every thing locked up tight.

    Vaporizor for Varroa Mites  DYI-054.jpg

    Attaching alligator battery clips to the other end of the wire and then those to the battery on my pickup, I put a couple of grams of Oxalic Acid in the trey and in less than 3 minutes had a good vapor going.

    Vaporizor for Varroa Mites  DYI-059.jpg

    Here we are using the vaporizer on one of our hives.

    Vaporizor for Varroa Mites  DYI-small-hive-shot.jpg
    Last edited by Eagle_view; 08-05-2015 at 10:20 AM. Reason: add photos

  2. The Following 2 Users Say Thank You to Eagle_view For This Useful Post:

    kbalch (08-05-2015), PJs (08-05-2015)

  3. #2
    Join Date
    Jun 2012
    Clermont, FL
    Thanked 516 Times in 375 Posts
    Thanks Eagle_view! I've added your Oxalic Acid Vaporizer to our Miscellaneous category, as well as to your builder page: Eagle_view's Homemade Tools. Your receipt:

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