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There has been a lot of chatter as of late in building Technic models with high-strength needs in mind. Whether you are building big (i.e. lots of weight), want faster cars and trucks and are planning on using RC components, lift a lot of weight with crane or truss, keeping Lego pieces together is an absolute must. I am currently also working on such a project with high-strength needs. This morning while building, i came across something weird. Now.... the top pins are obviously thicker and more robust than the bottom pins. Notice how thin the plastic is on those pins displayed in the bottom row. Now, to my knowledge, there are two kinds of pins, but only two kinds. A quick look on bricklink confirms this. Ones with slots in the middle and ones without such slots. Now..... the ones that are displayed in the pic up top both have slots! but.... as seen, the thickness of the plastic is so much different. The visual helps us see this, but to make sure our eyes are not deceiving us simple demonstration confirms this: I toyed with both pins this morning and the thicker are obviously stronger. Much much stronger. If I found enough I would create some experiment to demonstrate this. I searched throughout my inventory this morning and out of probably 5-600 pins only found 12 like this. My question for the forum is Does this represent a new part altogether or is it some anomaly in a mold or something? There has been criticism of TLG in the past few years of using less and less plastic in their molds...... is this just evidence of this? I have really only been building and collecting since 2012.....so it is not like I have any (or at least don't think so..... I have collected some sets from others that date back a decade or so) or lots and lots or really old pieces. If these are just older pieces and represent the less plastic used by TLG..... then I think it is worth mentioning that if you are building a project that requires a lot of strength.... look through your own collections and see if you can't find the thicker pins. 3L pins are already much thicker....... so mentioning that is kinda a moot point......
