CutJoint - Spiral Duct Offsets

CutJoint calculates spiral duct elbow offsets for sheet metal and HVAC work. Enter centerline offset and elbow diameter — get CUT JOINT, TRAVEL, RUN P, elbow CL, and throat in one tap. Quick chips for common sizes. Dual display in fractions and decimals. Live diagram with labeled callouts. Solve for S or θ. Rolling offset √(H²+V²). Inches or mm. Pin the last CUT JOINT to Home Screen and Lock Screen widgets. Share a job ticket from the result. Fully offline — paid buyout, no account, no ads, no subscription. • Two-elbow offset for spiral / round duct • CUT JOINT hero with 1/16" fractions + decimal • Travel, run, elbow CL, throat triad • Quick size chips and allowance • Rolling offset and Solve S/θ • Easy Offset-style labeled diagram • Home & Lock Screen widgets • Share sheet for the job ticket Built for sheet metal, spiral duct, and HVAC fittings — layout and takeoff on the jobsite. •…