Product tear down – Portable CD Player

Some notes from dismantling an Alba portable CD player:

– 8x Philips head self tapping or thread forming screws.
– Different sized screws used, but all with the same head. One screwdriver.
– No seal between the two halves of the main casing.
– Button modules are heat staked in place.
– Screen is attached to plastic casing with adhesive. No obvious alignment features.
– Blobs of glue and tape used for cable retention.
– Micro switches with injection molded buttons
– Small, stick-on foam pads control the feel for the button and hinge at max travel.
– Battery cover flexes for insertion.
– CD reader module held in place with shock absorbers.
– CD reader module travels on plastic rail.
– The lead screw controlling the position of cd reader module has a spring contact, so the module can be moved by linear force.

Foam Board Modelling

This tutorial outlines a method for making a foam board cube with very neat edges:

Below are some notes from my own attempt:
– The material used was 5mm thick foam board.
– When cutting the 45 degree edges, it was better to use a spacing of 4.0mm rather than 5.0mm.
– It was better to leave a small gap between the edges of the squares when taping the cube together.
– The masking tape was too sticky and it nearly damaged the foam board. A different masking tape may solve this problem, but it might be better to avoid tape altogether.
– The PVA glue took too long to dry. I would probably stick with a hot glue gun.