PM Research - Glassworks Unmachined KitNOTE: Machining & Assembly required.ATTENTION MODEL MACHINISTS: Now you can build a Stirling Engine from a kit. At the request of many model builders, we are pleased to offer our famous Glassworks Engine as a machinist kit.You can easily show off your hard work by showing the pistons at work. Look inside the glass cylinders at the Stirling Cycle principle in action. This engine is extremely interesting to watch, and runs at speeds up to 1500 rpm. A Pyrex heat cap, replaceable Pyrex power cylinder, gyro-quality ball bearings, bronze flywheel, aluminium cooling fins, and sand cast aluminium frame are only a few of the outstanding features incorporated into this engine.The completed glassworks kit measures 7½" x 4" x 3½".A sample quantity of "ESBIT" dry fuel is supplied with the engine. Denatured alcohol (Methylated Spirits) also works well as a fuel for this engine. For those persons who prefer using denatured alcohol, (Methylated Spirits) we have developed a handy burner, Stock No. 90, which is available for a small additional charge.Comes complete with 3 castings, bar stock, screws, hardware, assembly and detailed drawings. Machining and assembly required.