BallReviews
General Category => Coverstock Preparation => Topic started by: r534me on June 03, 2012, 07:15:22 PM
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does anyone know the grit of this thing?. I hit it with 320 grit to get out the scratches and need to finish it up.
thanks
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I remember looking this up a few years back, and I'm pretty sure it was 1000.
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I looked it up a few minutes ago and the majority of people that have reviewed it used 1000 as the finish.
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Darn, I was watching this thread because I don't remember. Would have thought it was that old Columbia standby 600 grit US/CAMI (the green Scotch-Brite pad).
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600. Quite dull out of box.
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600 is pretty dull. I don't think I have any green pads. I can hit it with a 500 ab pad and use a gray pad to bring it to 800 to see what it does? Basically, I need it a step or two below my blue hammer which is around 500. I tried the blue at 800 and it works better on the fresh 40 feet ths at 500 but not so good when there is a little burn.
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Darn, I was watching this thread because I don't remember. Would have thought it was that old Columbia standby 600 grit US/CAMI (the green Scotch-Brite pad).
I believe your closer to being right at 600 grit charlest for the O.O.B.
The Black U-Dot came out back in the late 80's with a Matte surface (matte or sanded was all they called it), which I think was about a 600 grit wet sand did with a cross hatch pattern at the time.
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600. Quite dull out of box.
Back when that ball came out 600 wasnt considered that dull, not when you had balls at coarser grits than that out.
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600. Quite dull out of box.
Remember that's 600 grit US/CAMI grading system (old fashioned, black, wet/dry sandpaper) which, in terms of our current sanding reference, Abralon pads, is equivalent to P1200 grit (FEPA grading system). That is not really dull, when balls like the Lane#1 Agent Orange come P500 grit.
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My reference to quite dull refers to using a 600 grit ball on 24 feet of short oil. Hammers may have been a bit more sanded compared to the U-Dot but still a bunch of surface for short oil.
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My reference to quite dull refers to using a 600 grit ball on 24 feet of short oil. Hammers may have been a bit more sanded compared to the U-Dot but still a bunch of surface for short oil.
Sorry, I misunderstood. Yes, I agree totally. I'd think that P2000 - P4000 grit might be better, depending on your rev rate and ball speed.
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I used my blue hammer on a short ths and I was standing 25 and swinging to 8 at 8-10 at the break and it was barely holding. I can safely state that 500 grit on a blue hammer does not work well on short patterns on high friction lanes. I tried up the 2-3 board and it hooked before the arrows!
I ended up having better luck(but not much) with my tropical storm.
My goal is to use the black u on 40 foot THS when the blue hooks too early.
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does anyone know the grit of this thing?. I hit it with 320 grit to get out the scratches and need to finish it up.
thanks
a 30 micron sanding pad was the box factory finish.
600 is pretty dull. I don't think I have any green pads. I can hit it with a 500 ab pad and use a gray pad to bring it to 800 to see what it does? Basically, I need it a step or two below my blue hammer which is around 500. I tried the blue at 800 and it works better on the fresh 40 feet ths at 500 but not so good when there is a little burn.
i would try p1000 and go smoother if necessary.
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30 micron is equivalent to P500 FEPA grade or between 320 and 360 grit US/CAMI grade.
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Sounds like I will try a 1k pad and go from there. Thanks everyone.
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30 micron is equivalent to P500 FEPA grade or between 320 and 360 grit US/CAMI grade.
correct Sir!
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30 micron is equivalent to P500 FEPA grade or between 320 and 360 grit US/CAMI grade.
correct Sir!
How on God's green earth, do you, sir, qualify as "newbie" on Ballreviews?
You're older than anyone else here in terms of ball knowledge!!
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I tried it yesterday for several shots on a freshly oiled 40 foot ths pattern and it had a some pop on the back end. It moved faster in the dry than my label drilled blue hammer. I guess I am not surprised since it's block weighted. Next, I want to compare it to my freshly drilled axis weight blue hammer(x hole 9 inches from the center of my grip).
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30 micron is equivalent to P500 FEPA grade or between 320 and 360 grit US/CAMI grade.
correct Sir!
How on God's green earth, do you, sir, qualify as "newbie" on Ballreviews?
You're older than anyone else here in terms of ball knowledge!!
the powers that be deleted my account.
I tried it yesterday for several shots on a freshly oiled 40 foot ths pattern and it had a some pop on the back end. It moved faster in the dry than my label drilled blue hammer. I guess I am not surprised since it's block weighted. Next, I want to compare it to my freshly drilled axis weight blue hammer(x hole 9 inches from the center of my grip).
the hammer will hook earlier and smoother. if the udot has too much "pop", just sand it smoother until you dial it in.
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I adjusted my u dot to 1k and it seems to go longer and moves a little sharper than my hammers but it is not quite as predictable as the hammers on the 40 foot THS I bowl on. I found that slight hand position changes keeps the axis weighted hammer in play for a long time. Maybe, when the lanes are drier I can use the u dot more.
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I know it has been awhile since this thread was posted to, but I wanted to clarify the facts for future people that might find it in a search.
The Columbia Black U-Dot out of box surface was 320 grit.
I confirmed this both with Columbia directly and with the captain of my Nationals team who used this ball back in the day.
Here is what he said about the Black U-Dot:
"I remember the Black U-Dot fondly... I had many. They were 320 out of box. It was common back then to wet sand the ball up to about 600 grit. It was also very common to polish on top of that using a Luster King machine to tone them down from the early hook."