My gut feeling is that epoxy has little plasticity, but it is clear. Sorry I have no first hand knowledge. Do you have a Rockler or Woodcraft store nearby? They are pricy but they usually have knowledgable sales people.
None of the structural epoxy that I have purchased at Woodcraft has fractured, but the history is limited to less than a year, mostly embedding pins into slingshots and more recently sticks.
None of the structural epoxy that I have purchased at Woodcraft has fractured, but the history is limited to less than a year, mostly embedding pins into slingshots and more recently sticks.