Member postings for c s

I'm trying to find unique large ways to create oval round shaped items using the least amount of tools available for poorer nations who don't have access to machine tools, through the possibiliity of elimination i've come to the paper mache conclusion but! i'm not comfortable there's no way to gage the roundness of my paper mache shape cause once its finished it gets coatings of gel coats for strength then advanced fiberglass cloth techniques can be applied.

I'm Using dirt, plastic and sand with a shovel to create a cheap large effective weatherproof temp mold we apply the paper-mache, (no woodwork tools allowed for parts) but! once its out we need immediate damage assessment of the roundness, more paper means more weight. We can use some paper but not hog-wild

I wish for the resin and fiberglass to be the only expensive export/import to dramatically cut costs & experience, it doesn't have to be perfect it just has to pass the eye test, human eyes are very good at detecting roundness but i'd feel more comfortable if there was a tool or device i could use, don't want to wing it with fiberlgass cloth, it could be very costly. Imprortant its round like a quarter dome you might see in the m-east rooftops

Having any tips would help me immensely too demonstrate to others, i just can't think of anything. 1st time Balance is real important, i could add more paper mache later but more paper means more weight when resin soaks in from my resin chamber (resin bubble remover) glass still needs to be added to final weight

Any ideas no matter how small on roundess perfection tools/tricks could possibly help alot.