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Equipment Boards => Roto Grip => Topic started by: TheGom on December 04, 2012, 06:03:09 PM

Title: Difference between 1500 Polished and 1500 Grit Polished
Post by: TheGom on December 04, 2012, 06:03:09 PM

Friend has an older RG ball (Ultra Sonic) and it states 1500 Polished as the finish on the ball. I tend to see 1500 Grit Polished as the norm on the new balls.

Is there a difference or is it just worded differently these days? He is getting it done today, so any fast replys would much appreciated.

BG

Title: Re: Difference between 1500 Polished and 1500 Grit Polished
Post by: charlest on December 04, 2012, 07:11:54 PM

"1500" has always been the grit level of the sanded ball before the polish is applied. You actually have 2 concerns here.

1. There are 2 grades of grit or sanding level. FEPA is the European grade now used by about 90-95% of all abrasive manufacturers (except Japan, I believe). CAMI is the older American standard or grading level.  FEPA grades are usually preceded by the letter "P"; here on ballreviews.com and many bowling sites, the P is hardly used. Most sandpaper manufactured in the United States  used the CAMI grading standard. Today even they use the FEPA standard.

1b. P1500 grit (FEPA grade) is equivalent approx. to 750 grit CAMI grade.
P3000 grit FEPA is roughly equivalent to 1500 grit CAMI grade.

2. Polish can very abrasive, like Brunswick's Rough Buff, Storm's Step 2,  or Brunswick's Factory Finish polish or Storm's Xtra Shine or hardly abrasive (such that it's consider non-abrasive) like Valentino's Snake Oil and Lanemasters Factory Finish.

2a. If you apply an abrasive polish over a P1500 grit sanded ball, and then the resulting surface will closer to P3500 - P5000 with a high gloss shine.

2b. If you apply a non-abrasive polish over a P1500 grit sanded ball, then the resulting surface will be closer to P2000 - P3000 grit + a high gloss shine.

2c. The result of applying any polish will be determined by both the underlying starting grit level AND
the amount of polish applied, the amount of pressure applying it, and the amount of time on the spinner it is applied.

Title: Re: Difference between 1500 Polished and 1500 Grit Polished
Post by: TheGom on December 05, 2012, 11:10:45 PM

Thanks for the detailed information Charlest  ;D

Title: Re: Difference between 1500 Polished and 1500 Grit Polished
Post by: kidlost2000 on December 06, 2012, 01:00:45 AM

He knowes surface like nobodies business.

Title: Re: Difference between 1500 Polished and 1500 Grit Polished
Post by: Bigmike on December 06, 2012, 12:04:01 PM

I always take notes when charlest speaks up about ball surfaces.

Title: Re: Difference between 1500 Polished and 1500 Grit Polished
Post by: charlest on December 06, 2012, 12:10:34 PM

Thanks, Guys.

Good luck, TheGom; hope it helps you. Playing with surfaces takes a little time and a little experience, but if you're rev dominant, like I am, it's almost essential to learn what small differences can mean to your game.

Title: Re: Difference between 1500 Polished and 1500 Grit Polished
Post by: TheGom on December 06, 2012, 01:31:12 PM

Far from Rev Dom here, but thank you very much for your time and efforts.