I've had a bit of a play with the bass. Ad Mick said, it feels pretty solid and the finish on the body is mostly good.
To get a smoother finish you could use a sanding-sealer when you're sanding it.
I am a bit confused with the switches for the pickups. Mick was telling me one of the switches is a sound-cut switch, but it isn't. The switches are a bit more complex than that.
The output isn't massive, but that might be increased by raisingthe pickups.
I agree with Mick on the headstock shape. It would be nicer if it were a little wider. The tuners are confusing as they work the opposite direction to others, as the left-hand ones are on the right-hand side etc. But this might simply be that Marco likes then this way.
The strings could be better if they sat deeper into the nut. This would gold them better and mayne give better transference of sound. Also, the break-angle of the strings at the nut could be better. This can be improved by adding a string-tree bar across all the strings.
The neck radius is very very flat. This means bending strings could be hard. This is interesting, because the bridge has a radius that is greater than the neck radius. The bridge radius means the strings A & D are higher than the E & G. This can be corrected to some degree in the setup.
The flat neck radius is flat in the centre, but has a curve off at the sides. This has meant that seating the frets has been difficult. If, next time you radius the neck with a radius sanding block, the curve will be the same across the neck and you can use curved fret wires to seat better on the neck. Filing the frets at the sides won't be able to fix this because the catchy bits are where the fret wire isn't seated.
The neck is a bit chunky at the headstock end. I measured the depth ad 30mm from front to back at fret 3. The depth of a Squier bass at the same point is 22mm. The depth of my Warwick Corvette, which is deep by many people's standards, and the chunkiest neck I own, is 25mm.
This depth of the neck is still the same at the 17th fret.
The pickup positions are a little further towards the bridge than my taste. The humbucker is centred at 805mm from the nut. On a Warwick $$ this distance is 790mm. This isn't to say it is "wrong", it is just different. So it gives a more "punchy" sound.
The position of the neck pup is the same as that on a Warwick Corvette.
The bass sits well on the strap. It balance well. It also only weighs 3.81Kg.
The wood selection is good. The maple is nice as is the walnut. The woods are well put together and in most places they meet up well with no gaps.
The body is smooth round the edges, with a good curve. As an early bass in Marcos building career, it's a great start.
If I can I'll try to get some pictures taken of it tomorrow.
Many thanks Marco.
Sorry, if this sounds critical, but there is no point in sending it if nobody says anything meaningful.