Random questions to which you seek an answer

[pechelman]

Thanks!
I rushed to do all this with cooking dinner, taking care of a sick wife, doing dishes, and a hasty write up. I'm wondering a bit more about fabric weight in general now. Is it really weighed or is it an approximate value based on fabric or yarn thickness instead? That might begin to explain the good correlation between oz/sqyd and thickness measurements whereas there's a very poor relationship to relative density and what we all know to be empirically true through wear.

[Luijim78]

@pechelman congratulations my friend

[tody]

@pechelman It almost looks like you need to be a... rocket scientist? to come up with that kind of chart

[Karol]

@pechelman waking up to see this is the best!!!
You made my day. The scientific method galore! I’m starting to study the results.

[Graham]

Bazinga.

[Jett129]

@Graham said in Random questions to which you seek an answer:

Bazinga.

Guessing you’re a fan of the Big Bang Theory. One of my all time favorites.

[sabergirl]

Wow @pechelman this is the best denim-nerd mad scientist ish I’ve seen in a while. Bravo

[pechelman]

thanks y'all. Hopefully no one thinks this is me trying to be authoritative or whatever. The density results are kinda meaningless imo, which is why I intentionally called it "relative density" and omitted any real units, but I thought it too ridiculous not to share.

I am genuinely curious about how fabric weight is determined now if one of the crew might be able to shed some light. Is the final woven fabric actually weighed in some method or is it based on some characteristic of the input yarns? Or something else?

[Mizmazzle]

@pechelman Freaking real deal denim science....seriously rad! Even if its not necessarily "Authoritative" some real thought and effort went into this.

[tody]

@pechelman The way I understand the technique is that a cutout of a specific size is made, weighed, and then it‘s calculated from there.

[Mister_Brue]

This post is deleted!

[Jett129]

@tody said in Random questions to which you seek an answer:

@pechelman The way I understand the technique is that a cutout of a specific size is made, weighed, and then it‘s calculated from there.

I think it’s a square yard of the fabric.

[tody]

@Jett129 This is what I found online: https://stonemountainfabric.com/what-gsm-means-and-how-to-use-it/

So that type of cutter is used:

[pechelman]

From the little I know through other hobbies from audio, knives, sharpening, fishing, etc, Japan has their own highly-intentional way of doing everything. I wouldnt be surprised if this was the case here also with measuring or calculating fabric weight and it might differ from what's standard in "the West".

[Jett129]

@tody That’s really cool. I have on occasion seen fabric weights given in grams,and just thought it was a metric system kind of thing.

[tody]

@Jett129 Here's a conversion table: https://www.ginifab.com/feeds/ozyd2_gm2/
You just have to convert both units, oz to grams, and square yard to square meter.

A lot easier than converting fuel consumption, where you go by miles per gallon, and we go by liters per 100km, so there is a totally different reference point.

[Jett129]

@tody Once again,that’s really cool as well. I’ve just occasionally seen the fabric,for example,described as 280 gms. Pima cotton. And since I know that there’s 28 grams in an ounce…simple math. But now if I ever see grams and meters…Bingo,or as @Graham would say Bazinga!

[CosmoSix5]

Not sure where else to ask this.

[CosmoSix5]

Seller doesn't want to measure and doesn't take returns. Help!?

[goosehd]

@CosmoSix5 here is the link Anniversary Flannel with the sizing chart.

Also moved your question to this thread.