This is only my second post, my first was a question about using my SM
Well, I'm using the variac to control my Kitchen Aid reproduction grinder.
Without the variac, I got some dust as it's a high speed flat bur grinder.
With the variac set on 60, about 65 volts, I get a nice consistent grind
with no dust and it's not shooting the grinds all over the counter-top. I
have yet to do very much adjusting of the voltage with my Zach's or Bravi
Roasters. Basically with them I just set it at 100%, 115v here.
Now for my latest SM purchase. It included 5# of green Zimbabwe AAA.
Dandoni Estate, some of Tom's pre- roasted Puro Scuro Blend (wanted to see
how he roasts his dual purpose beans as for color and stage) and the thermo
probe meter. Haven't had the Puro Scuro yet, but did roast a batch of the
Zimbabwe 2 days ago with the Zach's and using the thermo probe. Really love
Here is how I setup the Zach's with the thermo probe and my trial roastings
if anyone is interested. I fished the probe thru the chaff cup to the point
where the probe is just level with the agitator screw and between that and
the glass. Then I secure the probes wire with the chaff screen and close
the top of the machine. Using 125g of beans the finished roasts come to
about 1/4 to 1/2 inch below the probes button. Using 125g of beans I got a
first crack of Kenya AA at air temp of 355 degrees. This was the last of
three different beans tried so far and had the most distinct 1st crack. In
all three beans, Zimbabwe, Kenya AA, and a Brazil Estate occurred at about
405 degrees air temp. I let all three go to 410 degrees, and all three were
in about 15 seconds of second crack, and the Kenya was definitely in a
rolling second. It appears by the color that they all are in a Full City to
Full City plus range.
My next step is to modify the chaff cup with a small diameter tube brazed to
it to allow fishing of the wire thru it for more support.
Then it's onto the Bravi with the thermo-probe to try and get more control
Hopefully when I retire in about a month, I'll be looking for a 1 to 2 lb
computerized or computer monitored roaster.....any ideas?