THE PRODUCT KIT OF EACH BUILDER MUST HAVE A REFERENCE NUMBER TO MULTIPLY EACH VARIANT (EACH OPTION) BY THE REFERENCE NUMBER. ALSO, EACH OPTION MUST HAVE THEIR OWN QUANTITY SELECTOR TO MULTIPLY IT WITH THE VARIANT SO THAT WE CAN ADJUST THE PRICE AND QUANTITY OF EACH OPTION.

EACH PRODUCTS OPTIONS THAT NEED AN IMAGE TO BE DISPLAYED MUST BE ADDED TO A PARTICULAR REGION LIKE THE LINK I PUT FROM THINGIVERSE. FOR EXAMPLE, ALL SKIRTS, GUARDRAILS, ETC. MUST BE DISPLAYED IF IT IS SELECTED TO BE ADDED.

ALSO, EACH OPTION MUST ASK IF THE CLIENT WANTS TO BUY MORE OF THE VARIANT SELECTED IN THE OPTION.

THE BUILDER NEED TO HAVE A IMAGE LAYERING FEATURES FOR THE EPOXY FINISH. I DID AN EXAMPLE, BUT ALSO, THE IMAGE RESULTING FROM THE LAYERING MUST BE SAVED SOMEHOW SO THAT THE CLIENT CAN DOWNLOAD THIS IMAGE WITH THE USER GUIDE (ANY PDF) AND IDEALLY FOLLOWED IN THE CHECKOUT PAGE.

CHECK THIS EXAMPLE OF HOW THE IMAGES OR IFRAME SHOULD LOOK LIKE.
https://www.thingiverse.com/thing:2437440
WHEN WE CLICK ON A BUTTON 3D, IT DISPLAYS OUR 3D AND VICE VERSA. WE DON'T WANT YOU TO DO THE 3D FEATURE SINCE IT IS ALREADY DONE, ONLY TAG REPLACEMENT WHEN WE CLICK ON A PARTICULAR BUTTON.