I'm building a a kit guitar with a maple veneer. I have stained the guitar and started to apply a tru oil finish. I have applied a tru oil finish to another kit build with a maple veneer and ended up with a silky smooth finish. This kit on the other hand has a very porous appearance, like an open pore or open grain finish after around 15 coats of tru oil. It reminds me of mahogany its so open and grainy looking. Thankfully, for this particular guitar it looks pretty cool and I may just leave it this way rather than try to pore fill at this stage. The common convention/advice I've always received is that you don't need to pore fill maple due to it having tight grain. But I'm curious, have any of you experienced very grainy maple that didn't fill via top finish? Are there certain cases with maple where you may need to pore fill to get a glassy smooth finish?