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General Category => Coverstock Preparation => Topic started by: erh300 on May 03, 2007, 06:41:55 AM

Title: Uniform Surfacing Rules
Post by: erh300 on May 03, 2007, 06:41:55 AM

Since the flare bowties on a ball are not normally 180* from each other (for me anyway), when you "sand" the ball at, say, the top bowtie and then the bottom bowtie, the sanding lines, obviously, do not line up. Is this still a legal surface as long as the "grit" is constant? Just wondering and thanks for the help.

Title: Re: Uniform Surfacing Rules
Post by: DON DRAPER on May 03, 2007, 04:19:53 PM

the entire ball must be sanded....or polished for that matter.

Title: Re: Uniform Surfacing Rules
Post by: cgilyeat on May 04, 2007, 06:10:22 AM

erh400,  just to make sure I understand.  Are you sanding ONLY the flare bowties or the entire ball?  According to the USBC, if you sand a ball, you MUST sand the entire ball so that the surface is uniform in finish.  You can't sand just the bowties.

Title: Re: Uniform Surfacing Rules
Post by: dizzyfugu on May 04, 2007, 06:28:57 AM

You must sand the whole of the ball (4 or 6 sides recommended), but the direction syou sand the ball in the last step make a (small) impact. If you run the final lines in the same direction as your initial track, you can get a little more length and more back end - especially with a stacked layout, since the sanding lines become perpendicular to the movement direction once the ball rotates around its PSA. If you have the sanding lines at 90° to your initial track, the ball reads the early lane parts a little better, an option for added traction in heavy soup.

This works with and without polish, but the effects are IMHO negligible, since the sanding lines wear off easily. Nevertheless, I keep an eye on this setup option when I refresh ball surface, always sanding in line with my initial track during the last 2 sides of the ball. And, after all, it is a totally legal option and pros do this frequently (there is also a book about it, just forgot the title and author)
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Edited on 5/4/2007 6:28 AM

Edited on 5/4/2007 8:29 AM

Title: Re: Uniform Surfacing Rules
Post by: erh300 on May 04, 2007, 08:29:07 AM

Yes, I'm sanding the whole ball. I draw a dot on the bowties, center one on the spinner, abralon it, center the other dot and repeat. For me, this sanding method creates a smooth ball reaction with heavier roll at the pins. I have my SD73(1000) and my Mystic(2000) this way and they are awesome.

Title: Re: Uniform Surfacing Rules
Post by: star on May 04, 2007, 09:04:22 AM

It s fine how youre doing it.

Sanding with the bowties at the top and not having all the lines meeting up so they run perfectly paralell is what most people find. You dont have to make them all follow the same way, you just have to make sure the whole ball is done to roughly the same grit finish.

Dizzy the book youre talking about is probably revolutions 2 by Chip Zeilke.
Top class book with tons of info.
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Title: Re: Uniform Surfacing Rules
Post by: dizzyfugu on May 08, 2007, 02:14:38 AM

Ah, thank you. A friend of mine has the book, I just forgot the title. But it is really a good guide when you are into surface prep and what you can achieve with it
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DizzyFugu (http://"http://www.putfile.com/dizzyfugu/") - Reporting from Germany
Confused by bowling? Check out BR.com's vault of wisdom:  the unofficial FAQ section (http://"http://www.ballreviews.com/Forum/Replies.asp?TopicID=74110&ForumID=16&CategoryID=5")