
Compounding
#1
Posted 09 August 2014 - 01:12 PM
#2
Posted 09 August 2014 - 01:33 PM
However it helps with better polish.. I'd recommend G6 or if it's been painted a while you can use G4
#3
Posted 09 August 2014 - 01:52 PM
Did you wet down the g mop pad?
#4
Posted 09 August 2014 - 03:23 PM
I know compounding is hard work but should at least refine the p4000 scratches which these compounds and pads won't do.
Have polished cellulose before and that polishes easy compared to this.
Think its lechler hs 2k direct gloss using lechler fast hardener as recommended.
#5
Posted 09 August 2014 - 03:44 PM
Thats strange.
I have machine polished alot of cars both fresh paint and old paint and have never had any trouble using just G3 and a sponge head.
Actually, scrap that the first car i ever painted was a nightmare. I mixed the lacquer wrong and it went on like orange peel. It didn't seem to want to flat down and just ended up rubbing with the wet&dry. No matter how much i polished it, the flat nib marks would always keep showing through.
I just left it in the end and subsequently wrote the car off 6 months later so it didn't matter anymore!
You can get flatting pads that go on a DA which are designed to eliminate scratches from hand flatting but i don't know if this would make much difference to you?
Ben
#6
Posted 09 August 2014 - 04:04 PM
Just to check you are using the G3 compound and not the G3 retail polish range?
Maybe you could post some pictures of the problems?
Does the panel warm when you've polished it?
Edited by mini-geek, 09 August 2014 - 04:06 PM.
#7
Posted 09 August 2014 - 04:05 PM
#8
Posted 09 August 2014 - 04:26 PM
As you can see they are very minor and probably no more than most would consider a correction on a car been used a while, not easy to photo though


And a pic of a door showing the general appearance of a freshly painted panel before I did any sanding so no real paint problems to worry about,

If I can't compound them out I will probably grey scotch them and put another coat on, but would really like to master the art of machine polishing
I have a few bits on the shell, but may just leave them rather than risk not being able to polish them out
Edited by Daz1968, 09 August 2014 - 04:28 PM.
#9
Posted 09 August 2014 - 04:34 PM
Are you using enough compound?
Plenty of compound on a damp-wet pad using slow side to side movements with slight pressure should do it. Keep the pad wet with a spray bottle and keep going until the compound is cleared up.
You can finish up with a machine glaze or hand glaze if you prefer.
Other than that, i don't know what to suggest
Ben
#10
Posted 09 August 2014 - 04:37 PM
We had this problem when the 3M trizak came out (similar method to what you used) and was why we stopped using it..
Before you give up and do it again.. I'd try the G4 it's a much harsher compound.. Put a bit of weight on it, and get the panel warm..
Edit:- yes as Ben says plenty of compound..
Edited by mini-geek, 09 August 2014 - 04:37 PM.
#11
Posted 09 August 2014 - 04:39 PM
I thought personally that Ttizact was very good. Norton Dryice is also good
#12
Posted 09 August 2014 - 05:03 PM
What speed is your buffer on? its the first question to be asked.
Flat the panel with 1000 w&d using soapy water until the scratches disappear then go over again using higher grade w&d then wet the panel again and buff on a slow speed.
G3 is a good machine buffing paste, g4 is for hand buffing.
#13
Posted 09 August 2014 - 05:05 PM
#14
Posted 09 August 2014 - 05:07 PM
i looks like you just need to keep going over it with a mop on position 2.5/3.0 speed wise it took me 6.5 hours to polish my bmw bonnet alone and i used g3 on it it also could be you're mop head scratching the paint not enough compound build up on the mop head
Edited by henri1972, 09 August 2014 - 05:10 PM.
#15
Posted 18 August 2014 - 07:54 PM
Too late for my doors though as I have already repainted them, but at least if I sand the nibs I know I can polish them out.
Even with the g6 though this paint is hard and the compounding time consuming. Hopefully worth it when finished
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