Ric

That's my kind of marble, Fire - nice one!

Looks a lot like a pinch "pontil" transitional to me.

That makes me even happier.

Pokey makes me happy! Thanks, Fire.

This is pretty common on other Vitros and Peltiers too, Fire. Less common on Akros and Masters, I think.

It looks more like a Whispler or other foreign marble to me.

Straight on shots of the seams are helpful when IDing these types in particular and the marbles are not in focus so it's hard to see detail. I could guess but I won't.

It looks modern to me.

Nice contemporary - sweet pattern. Not my wheelhouse.

The first looks like an Akro - kin to a Lifesaver. The second looks JABO to me.

Of course, you're right . . . The distance between the "cut line" and the "shadow line" is equal to the length of the base, where θ represents the angle of the knife's bevel and altitude is equal to the thickness of the blade. In nerd words, B-C = A-B * tan(θ). 🙂 Note: There are a variety of assumptions and variables here that I am not interested in accounting for.

Every time I see this my first thought is - "The Cricket Box". 😃

I already have one in my head. lol

Check out the "Lets See Your Master Mibs" topic - I pinged you on it.

@Mister408 Here it is Mister!

Got it - makes perfect sense. Thank Again!

I do love my little "baubles", as I call them.

Just to make sure I get this . . . Is it the thickness of the shear blade or the width of the bevel?

Excellent description/explanation - I totally get how that happens now! Thanks!

I've got all kinds of neat smooth cullet shapes from Alley but the closest thing I've ever seen to a "Loop" is a closed ring made by a molten glass stream just happening to land right. Did Craig make that Loop intentionally or was it just luck?

Yeah, "marbles" was not the right word to use here - my bad.

Looks like a Funky Vitro Helmet, IMO.

@Shamrock Marbles It's a point well made, John - a pretty common occurrence on Vitros. And now I know what to call it - a "Shadow Line", which is great. So thanks for that!

Tommy's got it!

I agree with JABO Jorkscrew.