Sphere Forming Process Guide

A die deforms the sheet into a hemisphere. Two halves are welded, the seam is ground and the ball is mirror polished.

Range ∅6mm to ∅700mm, thickness 0.6mm to 3mm. Seams are invisible after finishing. There is a standard mould limit, which means the diameter has to match existing tooling — a customised size under ∅250mm needs a new mould at USD 1,000.

Standard press hole moulds are ∅19mm, ∅25mm, ∅32mm, ∅38mm and ∅50mm, so apertures in those sizes cost nothing extra.

Our technicians calculate the sheet development. Workers bend the leaf shapes and weld them into a closed spherical cube. Water pressure then forms it into a true sphere. The seam is ground and mirror polished.

Range ∅200mm to ∅3500mm, thickness 1mm to 6mm. Seams are invisible. There is no standard mould limit, so any diameter can be made.

This is also the route for water drop sculptures, where the sheet development is calculated for a compound curve rather than a sphere.

Two hemispheres are spun from sheet, welded together, then ground and polished. This is the thickest option we offer.

Range ∅89mm to ∅3500mm, thickness 2mm to 16mm. The equator seam is visible and the surface carries a spun texture. There is a standard mould limit.

Spun hemispheres carry the 45° welding groove, which is why they are the right choice if you plan to weld the sphere yourself.

Sheet is developed, bent to leaf shapes and welded by hand into a complete sphere or hemisphere, then ground burr free.

Range ∅200mm to ∅3500mm, thickness 1mm to 6mm. Seams are visible. There is no mould limit, so any size is possible — which is exactly when this route earns its place.