step 1 download file and unzip here: https://we.tl/t-2rV5POBMUl (if link is broken pm me or msg me on discord) (forums allow rar files up to 100kb but u can attach up to 4mb bitmap its stupid)
step 2 open https://stephaneginier.com/sculptgl/
step 3 on the top bar go to scene > clear scene > prompt will open; click yes
step 4 top bar > files (import/export) > add (obj, sgl, ply, stl) > select file

have fun