Temp control on a lube sizer with hard lubes has always been an issue. I finally got busy and solved it for me. I procured a Johnson Controls A419. Add a line in (120V) cord and a line out cord, and program as needed. I have used the A419 before, and knew it could be pinned to work in heating mode. I taped the temp sensor to the sizer with a piece of metal duct tape. The sensor cord is 6' long, so mounting is really flexible. Set the temp and offset for what you need, plug in your sizer heater cord, and wait for the temp to rise. The display shows you how you are doing. I am using CR from White Lube Company, and have had a hard time keeping the temp correct. I set the temp at 90 degress, adjusted a little later to 95 degrees, and it was perfect. I did a run of 800 bullets (45 twin groove) and never had to adjust again. The temp on the sizer never strayed more that +- 2 degrees once it was set. Finally, temp issues are a thing of the past. This is a super simple setup. If anyone is interested, I would consider building a few more of them.