Tru oil on top of spray can acrylic?

I would test it on scrap first. i picture the tru oil softening the acrylic.

 

Is there any advantage to using a tru oil finish as the final? Why not just use a compatible (same brand and family) acrylic clear?

 

Likely to fail.

Can Tru Oil be tinted?

 

You might try a foam brush and letting it cure before wet sanding with a high grit and polishing.

 

I've successfully tinted 25ml of tru oil jet black with Mixol. It went on black, but built slowly. Next time I do jet black, I'm spraying it.

 

I don't think that's such a good idea.
And there may be other options.
For one question...What kind of wood?
Some species can be turned fairly black (ebonized)
Here's how, In case you're not familiar :
Ebonizing Wood
Or... you could dye it black with something like TransTint. (But the oil will lift that pigment if you wipe too much and you'll see the grain).
Point is...
Both of these will allow the wood to stay porous and the TruOil to penetrate, like its supposed to, and build from there.
Also, the coats will cure way more evenly than what you would get wiping oil atop acrylic.
Not that I've done it that way.... just my opinion

 

Example of ebonized walnut coated with clear epoxy resin:



And The pickup ring and control cover ring here are both ebonized walnut coated with tru-oil:



You can even ebonize low-tannin woods by wiping with tannin (from a really strong cup of tea) before applying the iron acetate.

 

Lot's of black aniline die followed by tru-oil on swamp ash. If you can accept a less than jet black finish this would be easy and a safe bet.

 

Thanks. There must be 25-30 coats on there with some 0000 steel wool every few coats. It's a lot of coats but a coat is so easy to do it's still a low effort finish. It may not be as tough as a thick poly finish but it held up well to my non abusive playing style.

 

Since you picked up some black...
(I assume the paint was fully cured)
...then maybe the oil "melted in" a bit... and might actually stick.
But... damn...
That whole concept has me thinking about blisters or any dings peeling like a sunburn....down the road.
Just saying...

 

I agree. I hate to be a naysayer but the whole concept of putting oil on top of another finish seems very roundabout to me when you can probably get the result you want without mixing things up. Even if it "works" it just seems... unconventional, I guess?

If you want to use spray acrylic, just put a clear spray acrylic top coat on. If you want to use oil, stain the wood first and/or tint the oil. Or if you want something easy and foolproof, wipe on tinted poly and then topcoat with wiped on clear poly. The technique is similar to wiping on oil but it'll take fewer coats and it's more durable.

 

Wipe on poly can look super nice in an understated way kind of like oil finishes.. nice and as easy as can be too