Meguiar`s #4 or #84 for extreme fiberglass oxidation

[yanks_178]

My shop is next door to a marina so I do tons of boats.. love them. In my opinion easier than a car and more money. My process:



Wash with toilet bowl cleaner using a sponge

Buff with Rotary with 105 on a wool pad (if I don`t get the results I want I use the Meguiars Boat Resto Kit) About 1800RPM

Buff with 205 on a Meguiars Yellow polishing pad About 1200 RPM

Wax with Meguiars boat wax with Da



Works every time. I can do the outside of a 20` boat in about 3-4 hours. Don`t worry about burning through that gel coat!!!!!



I do not do the bottom`s of boats for customers. I will get from about the trailer bunks/rollers forward but do not crawl underneath.



I have used Ultimate Compound a few times with great success too.

[Mr.Jenkins]

What exactly do yall recomend washing a filthy boat with before starting

with the compounding + polishing?

[gofastman]

Ok I picked up some LC twisted wool cutting pads and some M105, I still would like to try M04 or M84 first as I rarly use them and I wanna use them up because their getting old. Anybody have any insight as to which compound would be more effective on gellcoat?



yanks_178, you said scrub tha outside with toilet bowl cleaner, should I use the stongest stuff I can find or do you use a perticular brand? Im woried about doing damage to the finish if I use an industrial strienth acid cleaner on the outside.

[VanityDetailing]

I use the Meguiar`s Velocity Mold Release products for heavy oxidation on boats.





Meguiar`s Velocity MV80 has the cutting power almost equivalent of about 800grit sand paper.

Meguiar`s Velocity MV81 is like the cutting power of 1500 grit, that breaks down to a fine polish as it`s used.





It`s used in the fiberglass mold productions, to make a glass-smooth finish.



I use MV80 with a W4000 wool pad, for severe oxidation.

MV81 with a W4000 wool pad for heavy oxidation.

MV81 with a W8000 foam polishing pad for mild oxidation/general polishing. I`ll usually use this after the MV80/W4000 combo.





It is aggressive stuff. And it will eat through the paint stripes if you`re not careful. But to make a gelcoat look brand new, I haven`t found anything better. Not that there isn`t something better out there, but I`ve used a lot of different compounds, and those are the best I`ve found.



Here`s a link for the MV80:

Meguiar`s Velocity 80 Speed Cut Mold Compound Gallon - SKU# MV8001



And the MV81:

Meguiar`s Velocity 81 Mold Compound Gallon - SKU# MV8101





They only come in gallon sizes, though.



Here`s a before of some severe oxidation I had on a 65` Novatec yacht:





Here`s an after, from the MV81 and wool pad:





And here`s the profile shot, from using MV81 and a wool pad: