Re: [CAD_CAM_EDM_DRO] Re: Polished acrylic machining

OK yeah. Now another person replied directly to me suggesting acetone,
which does dissolve acrylic but I've seen where solvents may actually
cause widespread crazing (tiny cracks) in acrylic/polycarbonate. IIRC
the guy needed to clean a plastic windshield and had MEK handy... lots
tears shed over that one.

Now the acrylic cement, that sounds sure to be compatible, but also
expensive and tricky to apply and dry compared to the flame treatment
(is a heat gun hot enough?). But I can just dissolve 10% by weight of
acrylic chips in chloroform? That would be neat and cheap.

The surface would be something like the prisms on the inside of a
taillight lens. Getting mechanical buffering in there would be tricky,
actually even getting the remnants of the buffing paste out of the
surface when done would be difficult.

Danny

kefale1 wrote:

>
>
> Hello you can try the acrylic cement that is solvent base to try to
> restore the surface shining in the machining area you can improve it
> disolving in it some of the acrilic chips.
>
> The next option is to get somo chlorinated solvent (chloroform is the
> one that I used) and disolve some acrilic plastic on it up to get the
> consisitncy of a light oil (is about 10% in weight of acrilic).
>
> with this solution aply it to the surface and allow to dry, take the
> normal precautions to the use of solvents (use it away from flames
> and sparks and with a good air circulation)
>
> If you need to polish some surface you can use your dental paste
> (preference the white one) with a rag or you can use the polish
> compound that is use for cars with good resuls if you need to use in
> a small hole you can saturate a cotton cord with the polish paste and
> past the cord back and for several times and that make the trick.
>
> Hope this work for you
>
> Have a nice day
>
> Jose L Sanchez
>
>