A384

You can create custom paper by recycling old scraps using this method from Instructables :

: Simple folding techniques allow you to make an envelope without glue or tape.

Making paper at home is a simple process that involves turning old paper into a new, textured sheet. Since you mentioned "A3" and "A4," you can also easily resize existing sheets to fit these standards. You can create custom paper by recycling old

: Flip the wet sheet onto a flat fabric surface (like felt or a towel). Press out excess water with a sponge, then let it air dry completely. Working with A3 and A4 Sizes

If you are looking to resize or convert between Standard Paper Sizes , keep these proportions in mind: : Flip the wet sheet onto a flat

: Simply fold an A3 sheet in half along its longest side to get an A4 size (

: You can fold a single sheet into a mini 8-page booklet with just one cut. : An A3 sheet is exactly twice the size of an A4 sheet

: An A3 sheet is exactly twice the size of an A4 sheet. You can join two A4 pages side-by-side to create an A3-sized workspace.