Building 1 time use mold. input?

[abl1111]

I was just at a HD today buying 'stuff' and went to check out the hardboard material. I have never made a mold and will attempt within the next 2-3 months.

Strick, how much can that stuff bend ?

I am starting to think-out a tackle center box that mounts to the floor and mounts my ped seats ( that I don't own yet ).

Anybody ever see this done ? If so, have you got dimensions ? What core would you use here ?

Also, how would you make the mounting lip/flange on the bottom - inward or outward ?

Thx,

alan