those are more likely 100k scratches. spend more time at 1200 then 1500. do a small spot of cross hatch with the 1000 . this will let you know if your getting them out. 1200 opposite direction . we use to call them Tell spots .Probably not sanding enough. Though I'm sure junk is getting under the paper and causing scratches. YES, large pigtails deep into the clear. I had to go back to 1000 by hand to get out the pigtails.
Using a Festool sander on speed 2 (of 6). Only using the weight of the sander, no pressure.
Here's 8 hours of sanding on a door today.... All by hand. 1000/1200/1500/2000. Trizact 3000/5000/8000. Cutmax, then ex 04-06. Looks great from 2 feet. Up close in the sun, scratches... 30 minutes after polish, pulled it outside, and already covered in dirt and dust. I swear this thing is magnetic. I'm almost embarrassed to show these pics.
The sideways scratch is from 1500. The vertical swirls if from the buffer.
I'm struggling to get the 1500 out. After 1500, I did 2000 wet. Counting 10 strokes, move an inch, 10 more, move an inch, etc. Went back over it up to 10 times. So that is over 100 passes, and didn't do squat to cut the 1500 scratch.
Thanks Barry. I'm afraid of tearing through the clear with wool on 4. Maybe I will give it a try on something that I can easily re-clear if I destroy it.Just a reminder.
You are dealing with polyurethane and all the first step of buffing.
1) it must be with a wool cutting pad.
2) higher RPMs on the first cut only,
Im at least 4 setting.
No way,Thanks Barry. I'm afraid of tearing through the clear with wool on 4. Maybe I will give it a try on something that I can easily re-clear if I destroy it.
Have a spray bottle handy and keep your panel slightly wet when using the wool pad or any pad. As your compound is drying or getting picked up by the pad a squirt or two helps the pad to stay lubricated and use less compound. Your pad stays cleaner as well.Thanks Barry. I'm afraid of tearing through the clear with wool on 4. Maybe I will give it a try on something that I can easily re-clear if I destroy it.
That's not easy to do on bumpers. Too many twists and turns and plastic doesn't dissipate the heat like metal.No way,
Just hold buffer flat and no pressure, just weight of buffer.
I do 2 to 3 feet section at a time until all scratches are gone, then the next section.
last week i used 3d step one and step 2 polish with the 3d wool pad and a lake county white foam pad both at a 900 rpm with that 3d pad it cuts pretty fast .( expensive pad but worth it) it looked pretty good at first then i thought it might look a little better so i bumped it up to 1500 and this is the result.... btw this is the first pannel i have ever color sand and polished , iam pretty happy with it ( the wire between the floresant lights is not urethane wave, its the wire its self lol)It seems like a lot of guys here just do a 2 step buff polish. So 5 rounds of buff/polish? Are you suggesting wool through white all with the same cuttting compound? What is the last sanding grit you stop with? Thanks.
thanks don, I saw a post somewhere that you were raving about it, so i bought one. thanks for that insight. its worth every penny! lolLooks great. Those 3D yellow wool pads are amazing. I bought several in case they are ever discontinued.
Don
last week i used 3d step one and step 2 polish with the 3d wool pad and a lake county white foam pad both at a 900 rpm with that 3d pad it cuts pretty fast .( expensive pad but worth it) it looked pretty good at first then i thought it might look a little better so i bumped it up to 1500 and this is the result.... btw this is the first pannel i have ever color sand and polished , iam pretty happy with it ( the wire between the floresant lights is not urethane wave, its the wire its self lol)
Yes rotary. Mikita. Use lots of guide coat on every step except 3000. I used 800,1000,1200,1500,2000,3000That is amazing. Absolutely fantastic job!
Did you use a rotary buffer or ? What kind was it for you to set the rpm's?
8000 is not a waste of time imho. I toss the Eagle yellow when it stops cutting. Typically a couple of discs per panel. Time is money imho so I don’t waste time messing with worn out discs. If it’s loading up more than that then maybe your clear has not cured enough.Slammed, nice work. Looks great!
Sounds like I'm wasting my time and $ with 5000 and 8000 trizact. I ran out of Cutmax, so maybe I'll try ACA500 next.
Another question for you guys. When dry sanding with the Eagle paper, it loads up quickly. How are you all cleaning off the paper?