Lighter Lego

[anothergol]

I got into the habit of going to specific parts when I need fillers, and I'm sometimes wondering if I'm not doing things wrong, either because there's better optimization, or because I got the info wrong.

There are 2 reasons to pick a filler, price or weight. Not gonna debate about price since it's totally random out there, sometimes parts on BrickLink & B&P are on opposite sides. Also some fillers can be way cheaper on BL because no one goes for them when MOCing and there's less demand.

So, weight, it's often an issue and over hundreds of parts, the difference can play. But I'm relying on BrickLink as for part weight here. The question is, is BL generally reliable for this (yes I could weigh them myself)? And also, is a part's weight even stable over time (material changes)?

Anyway, generally I go for:

Lightest 1x1 plate: I generally go for 85861 (round with hole) but BL says that 24866 (new flower) is lighter. But it could be an error? They're both cheap. I generally recycle filled studs though.

1x2 plate: 2xflowers but 35480 more practical

1x2 tile: 1748 is now beating the good old 2412 grille, but I suspect BL is wrong because 2x25269 is also beating 1748, doesn't look normal

2x2 plate: can't beat good old 4032? apparently 4xflowers would beat it

1x2/3: 33286 too hard to find, 2xflowers stack seems best (is the flower the ultimate Lego or is the reported weight just wrong?)

1x1 brick: 59900 technically, but 3062 is more stable

1x2 brick: used to be 2877 I think but now it is 68013

1x3 brick: can't find better than basic brick

1x4 brick: 2653. 32802 also good but only 2 studs

1x2x2 brick: I used to go for 87552 but 60032 is much lighter and 60592 is also lighter and stronger

1x4x2 brick: 15332 is a bit lighter than 14718

(will continue later if anyone's interested, as BL just went under maintenance)