Hi everyone I'm a novice RC kit builder so I'm still learning the tricks and limits.

The big thing is I recently purchased a Tamiya Blitzer Beetle and am yet to build the kit. I want this build to be something special so I wanted to start the build by substitute all the self tapping screws I possibly can with hex head machine screws .

There lies my problem, I don't know if it will be good for the build or not. In my mind tapping the holes and using a finer thread would offer more surface area to grip on thus making it more durable.

So there, should I tap all the holes and use machine screws or not?

The finer thread will not have the same thread depth into the plastic. In my experience, self tapping screws are the better choice here.

Nice thread title.

I guess it all depends on thread depth and the type of plastic as to what thread pitch will be the strongest...having said that...fine pitch in plastic is very easily ruined after a few rebuilds...

Well I assume the Blitzer is made out of ABS. I think most of the re-re Tamiyas are. I think the 3M cap screws thread is 0.5. Wouldn't adding some thread lock also help to strengthen it?

I am planing on doing most upgrades and mods during the first build.

Tweety have you tried something like this before?

Yes I have. There are over 100 vehicles in my collection and I've found "upgrading" to pretty stainless bolts to loosen more in plastic after a single race weekend.

Loctite will not provide any strength or improved securing to plastic.

So the bottom line is that its not worth the extra money and effort for a small aesthetic improvement. In fact it might be detrimental to the car in the long run.

Thank you for the sage advice Tweety.

on threadlock and plastic if I remember right it actually can screw the plastic up I think it eats into it