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Message: <blockquote data-quote="TazMan2000" data-source="post: 5272340" data-attributes="member: 7510">Sometimes modelled holes work as well but it depends on the orientation. There should be enough wall thicknesses to accommodate the drilled holes. For a helmet, I recommend at least 4 layers on all sides, sometimes more.When the holes aren’t pre-modelled, I usually use a knife to etch the pin hole locations on the outside. Your holes probably never going to be perfectly oriented on the first try, but I fill the improperly drilled hole with CA glue and re-drill a new hole. Sometimes bending a pin will also work. There is a bit of trial and error with this process, but it’s better than than eyeballing when gluing.Before I used this idea, I’ve glued pieces together and realized almost immediately that they were slightly off. I tried to separate them and ended up ruining both pieces that I’ve glued together because the CA glue joint was so strong. 24 hours of printing wasted.The pins also add a bit of strength as well.TazMan2000</blockquote>

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