Old 06-15-2011, 05:28 PM
  #128  
Slow & Low
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One of the first places to wear on a multi-piece mould like this, is the edge along which you trim semi-green parts just prior to joining. As a result, it's a very slow and tedious process to try and freehand.

This aluminum insert in the mould face will help to provide a nice durable trimming edge face. Notice the external grooving to aid in bonding with the tool surface coat.

It will also form an overflow channel to give excess resin during joining a place to go.

It might also provide a calibrated groove in which a custom trimming blade jig might ride...

Here's a source link (for future reference, 36" weighed in at 205 g)

http://store.workshopsupply.com/cata...ck-p-2954.html

...and here's the idea...



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