swf999
Senior Member
- Joined
- Nov 2, 2022
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Not every JMM is cut from 10mm block of acetate.I think one major difference is that CH don’t sell via their website.
Also my impression is that CH specialize more in wire frame style although I’m sure they do acetate too. Are they usually 10mm chunky acetate that we love about JMM?
I’ll also add for wire framed styles I have a pair of Leisure Society in titanium that I love!
For e.g
Schindler, Eva are cut from 8mm block. Cleveland is cut from 7mm block. Savoy doesn't even mention the thickness of the block.
Secondly, JMM does not mention what block thickness the temples are cut from. JMM uses XXmm as more of a broader term to market to common people without getting much into specificity. Also Jerome had said, there are select few frames still made in Italy by JMM depending on the style of the frame.
So, it could be that the frame part is cut from 7-10 mm block and the temples from 6mm block thickness. It is not uncommon for manufactures to do this distinction because the frame part needs to hold prescription glasses and temples need to have metal core inserted to add increased strength and some flexibility to adjust around ears.
Basic idea is - a single block provides more tensile strength. That applies to any physical structure such as Tripod base heads, Macbook aluminium body, etc.
Not to get confused with thickness of the frames. That is completely different. You could have a thinner thickness frame cut still from 10mm block of acetate. Ichikawa is cut from 10mm block but the frame thickness is only 5mm and on top ridge there is smaller portion which has 8mm thickness.
There isn't much significant difference in terms of inferiority for thickness between 6mm-10mm as long as they are cut from a single block of acetate rather than infusion technique where they inject into a mold of certain shapes.
There are few other Japanese brands which make extremely high quality frames e.g True Vintage Revival - Cut from 8mm block for front, 6mm for temples & 14K Gold Plating metal core, 7 barrel hinge. They don't have marketing like JMM does.