Yep, that is right. I am sanding again. I just could not tolerate the mess of the finish I have. Others state they cannot see what I am talking about. But the topsides are covered in sags and runs. The deck is covered in orange peel and sags. Yes, it was polished to a satin finish. But I spent too much time getting a smooth and fair hull and epoxy encapsulation to live with this. So here it is 10 days before the Gathering and I am busy refinishing the hull. I must be crazy.
Two days ago, I brought Midnight back into the shop. I started on the topsides and have them finished as of today. Some of the sags are still showing but at least the finish is right and there is no orange peel left. I worked on the deck all day.
The 25 minute video shows me working a small area. I am doing this to the entire hull. The process is a follows:
1. Sand dry with a RO and 220 grit. I used only the weight of the sander to only level the surface. It is easy to see when the orange peel disappears. I would not recommend going any further in the sanding than to remove the orange peel. The low spots in the peel will remain bright as you sand until you just get to that point when you have the surface smooth. Then everything turns grey.
2. Wet sand using a foam backer and 600 grit on a air powered DA. This grit is aggressive so I had to be careful for it finished whatever I did not get with the 220.
3. Wet sand with 800 grit
4. Wet sand with 1500 grit
5. Wet sand with 3000 grit
6. Polish out using a foam pad and marine finishing compound.
If you do not get all the sand marks out from the 220 you will have dull areas in your finish. The compound just cannot take out scratches that large. The solution is to go back and resand thru the grits starting at 600. The second time is generally sufficient to get it all. I had to redo several areas but it is a learning process of how long to sand with each grit. You cannot see the changes so it is a matter of practice. I found that if I sanded an area until some white dust coloring appeared in water then I got it right.
So here is the video of me working out a small area.