Mr. PG, is that a pre-cat laquer, and what type of urethane?
I have been quite successful using Titan Paper with a 150/3 going in succession from 500g to 1500g to develop a nice shine (make sure your vac is on the turtle); then the Rotex with McQuires Car Polishing compound and a sponge application pad then proceeding to use soft felt pad to hard felt with . The trick is to really let that Laq or Urethane cure for a SEVERAL DAYS...the longer the better! If you can hold out for a week or two, that would be ideal.
Timmy C
edited for high-lighter WOW, THAT IS BRIGHT.
"...SEVERAL DAYS...the longer the better! If you can hold out for a week or two, that would be ideal."