I used to do it without a temp controller but it requires constant monitoring. I found that is was very difficult to keep the temp up without turning the frig off most of the time. Turning the dial to 1 for an hour or two kept it around where I wanted it but it was hard to avoid large temp swings.
Beer, if drank with moderation, softens the temper, cheers the spirit, and promotes health.
"Give me a woman who truly loves beer and I will conquer the world." - Kaiser Wilhelm
"I would kill everyone in this room for a drop of sweet beer."- Homer Simpson