the reason i started multiple threads was because :
1. i didn't think there was anything wrong with it.
2. all the questions do not come together - they take time to develop.
3. and having started a thread on one particular issue under a specific subject line, i found it illogical to post a different issue under it.
4. also we have multiple categories in this forum itself right? so specific questions relating to that category might better appear in such sub-forums - for future reference by other people.
5. also even if my questions relate particularly to thinlines, it could have relevance for other builds too (eg : spruce as a top or the tone of korina or suitable body wood for a pau ferro fretboard etc) - so others not interested in thinlines might not be turned off by the subject. also specific subject lines will invaribaly catch the eye of those interested in the subject.
but anyway now i know you guys preference. next time i have the heat about a particular model, i will open its own thread.
Just be forewarned. You're wedging a decent chunk of metal into wood grain. Think of it like splitting logs for firewood. Some of the time the axe will stick in the wood, other times the wood splits along the grain.
A proper sized pilot hole eliminates that possibility by removing enough wood for the screw's shank. The only thing that should cut is the threads.