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● R&D

Eureka V7.5 Symmetry (July, 2018)

by Eureka_Admin 2019. 10. 6.

The V7.5 is similar to V7.0.

the feed was changed to plastic one, for productivity and stability.

eureka ebonite feed 1st. Gen. feed was not bad at all.

however, it couldn't achieve same stability as the plastic ones.

This is a common problem with ebonite feeds.

It is simply near damn impossible to pracically make a feed that functions like plastic feed.

there's so many features that needs to be carved into the ebonite material.

on top of them, the feed is small and thin.

to make the matters worse, the material is very pliable, which causes instability when machining.

therefore, i had no choice but to resort to plastics ones, at least for a bit of while.

other than that, frontal grip design was changed a bit.

 

I almost forgot to mention.

one big change was in the material it self.

previous versions all used Indian import ebonite material.

However, no matter how hard i ground and polished them, I couldn't achieve satisfactory premium level.

the material itself was very porous and sometimes had small chunks of contaminants in them.

also, there were black specs in the material, that was too noticeably big.

 

then I decided to change the source to Japanese supplier.

magically, all the problem vanished, and i achieved high qulity finishing.

 

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