My building board is made out of pinboard glued on to chipboard with contact adhesive. The pins go through the pinboard fairly easily and are held tight in the chipboard.

Technical terms are different in the USA compared with England, in motoring for example, a hood is a bonnet and a trunk is a boot! Given the situation therefore, I don't know whether pinboard is called pinboard in America but you've definitely seen it. It is used for notice boards in High School, allowing teachers to put up notices about the drama group or football team.

You could use plywood as the base for the pinboard, minimum thickness 1/2 inch preferably 3/4 inch, instead of chipboard but ply is more expensive; it would probably do a better job. To repeat what has been stated above, it has to be flat.

The 4* Series are excellent models with good low-speed flying characteristics but so are Telemasters which is one of the reasons I import them into the UK.