GRAPHITE NOZZLE

AKA: Shipping Delays Cause Minor Design Change The single-use design of Aerotech nozzles may be cost-effective to include in a kit, but when ordering from RCS, the availability of a particular nozzle needed for the motor case may not be available due to shortages or other delays related to their business. Going with the original […]

FUEL GRAIN PART II

After gaining experience with the 54mm ABS grain shell, I decided to do the 98mm. Using a printed shell allows you to select the right amount of infill based on your fuel viscosity. You will need to account for the high shrinkage of paraffin, approximately 17%, so once it cools a little bit, top off […]