This blog provides information for educational purposes only. Read our complete summary for more info.
How To Seal a Copper Still
Once assembled, Clawhammer copper stills will actually be comprised of 2 pieces: the boiler assembly and the column assembly (see the picture below). These two parts are NOT permanently attached. This allows the still to be taken apart to allow for filling, cleaning, and easy storage. However, the upper and lower assemblies must be sealed together before the still can be used.
If a still has not been sealed properly, vapor could escape from the joint, allowing your precious whiskey to literally float off into thin air. Additionally,a leaky still could lead to a build up of alcohol vapor if the still is being used in a confined space (which is NOT RECOMMENDED). This is bad news, as alcohol vapor is explosive at high concentrations. So, always seal your still and never distill indoors.
Rye flour paste is the traditional method used by moonshiners to seal seams on copper moonshine stills. We recommend using the following flour paste recipe to seal the seam between the collar and cap on the Clawhammer Supply moonshine still. If you have leaks at any other joints, they must be sealed with solder before the still can be safely used. Only use flour paste on the joint between the boiler and column assembly.
Perfect Rye Flour Paste Recipe
- 3/4 cup rye flour
- 1/3 cup water
- Mix the rye flour and water together with your hands
- Roll the flour paste into a snake
- Once the boiler reaches 115 degrees apply the flour paste to the still
- As the still heats up the rye flour paste will cook onto the still creating a seal at the joint
- Always monitor your still to make sure that alcohol vapor is not escaping from the column assembly joint. Re-apply paste if needed.