Refinishing sire bass and filling cavities

[brickers]

I have a sire jazz bass that I routed some wood out of for new pickups. I’m considering routing out yet more wood for different pickups. Sooner or later I want to repaint the body and fill the unused cavities and I’m just wondering the best way of doing that. The plan so far is to fill the cavities by gluing in wood blocks, lightly sand most of the body, and completely sand the front, then use car paint spray cans for the refinish. My concern is that over time there might be some join visible on the front if there is wood movement - I’m going for a pickguardless look. Is it worth finding some very thin sheet wood to glue over the front? For example Hobbycraft have sheets that are 1/32 of an inch thick. 
 

Does anyone have any experience of refinishing sire bodies? Are they known to be polyurethane? And if so am I right in thinking they can be painted over as long as they’ve been sanded to give the paint something to hold onto? Would this apply to the headstock too - I’d like to match the body colour and I’ve GOT to get rid of that terrible shape…

[BlueMoon]

1 hour ago, brickers said:

and I’ve GOT to get rid of that terrible shape…

This would be the most important thing on my list........being the totally shallow creature that I am.

[brickers]

4 minutes ago, BlueMoon said:

This would be the most important thing on my list........being the totally shallow creature that I am.

Absolutely. Takes a swathe of inexpensive basses off my shopping list, sadly. But I cannot get over it since some Canadian on talkbass compared it to a moose head

[MichaelDean]

Just now, brickers said:

But I cannot get over it since some Canadian on talkbass compared it to a moose head

That kinda makes me like it more 😅

 

They're definitley going to be poly, so yes, you should be able to scuff it up and paint over the top of it.

[brickers]

25 minutes ago, MichaelDean said:

That kinda makes me like it more 😅

 

They're definitley going to be poly, so yes, you should be able to scuff it up and paint over the top of it.

Thanks Michael.