I bought this for the surface finish and mouldboard on my CNC router. If you are using this on a large piece (my mining board is 3ft x 4ft) it might be worth buying a larger piece. The 1 inch tank tip makes the job much faster. Be careful with Big Box MDF when using this attachment. I've come across staples buried in the middle of MDF twice. The latest collision caused some damage to this nozzle.