What grit sandpaper to use for thumb hole adjustments?
Now that it is getting warmer my thumb started hanging up in the thumb hole because of heat and humidity. What grit sandpaper is good for making minor adjustments on either side of the thumb knuckle? This usually starts to happen near the end of the second game on league night. By the third game I start to get pulled shots. So how about some thoughts on this.
Arsenal: Raw Hammer Orange/Black Hybrid 14lbs, Blue Hammer urethane 14lbs, Columbia 300 Lava Ball Plastic 14lbs, Highest scratch series 710 Bowling 38 years Never hit that 300 game. Highest game 276, had 11 strikes and one spare in the middle of that game.
That's pretty much just going to be personal preference and what kind of feel you want in the hole.
I have a piece 100 grit I carry around, but I haven't used it in the thumb hole in a long time (years). I have a wood dowel I wrap it around if I need to tweak a new finger insert.
I've seen one or two guys use a small piece of drywall screen.
There's a few workout tools that you could use such as:
Ebonite workout tool
or
Ebonite 3-in-1 Bowlers Tool
or a
Master Round Rasp
Right handed Stroker, high track ,about 13 degree axis tilt. PAP is located 5 9/16” over 1 3/4” up.Speed ave. about 14 mph at the pins. Medium rev’s.High Game 300, High series 798
"Talent without training is nothing." Luke Skywalker
I have 180 grit.
Do you have a urethane thumb slug?
How about using a narrow strip from a scotch-brite pad? Place it on your index finger and rub the area that is likely hanging up on you. I've used the green pad and it doesn't take much. For me it's the sides of the thumb that begins to rub a little bit. The narrow strip of scotch-brite is about 4 inches long and about 3/4 inch wide. Hope this helps...Originally Posted by Hammer
I use a 120 grit cartridge roll very gently. It's the same roll I use for doing the bevel on the front of my thumb hole.
Old guy with power (15.5-16; 325). Current arsenal--Storm Summit, RotoGrip Idol Helios, Storm Phaze III, Storm SureLock (retired), Storm IQ Tour Nano and Motiv Rebel tank (spare/dry). High sanctioned game - 300 (5). High sanctioned series - 856. A.V. 300-s - 8. Longest string - 25.
2024/2025 YTD highs--High game-288; high series-736
For minor adjustments I use drywall screen
Still love the game but had to quit because of my left leg amptation
High game 299 x 5 High sanctioned series 805 (1989)
I've used a polishing pad with a Dremel to remove a small amount of material and smooth the surface a little better, I've often seen the local PSO's use the same tool using a disc called abrasive buff to smooth and remove a small amount material from the thumb hole.
Never thought of that. Think I need to put that one in my memory bank!
Old guy with power (15.5-16; 325). Current arsenal--Storm Summit, RotoGrip Idol Helios, Storm Phaze III, Storm SureLock (retired), Storm IQ Tour Nano and Motiv Rebel tank (spare/dry). High sanctioned game - 300 (5). High sanctioned series - 856. A.V. 300-s - 8. Longest string - 25.
2024/2025 YTD highs--High game-288; high series-736
Funny thing about drywall screen. Way back in the day my shop would surface my old urethane ball with screen!
No idea what the finish was but it was pretty rough. Worked well tho on that ball, it would actually hook a little haha.
Current arsenal:
Motiv Trident Motiv Jackal Ghost RG No Rules RG DareDevil
C300 Impulse Hammer Black Urethane
I'll use 400 grit to remove large amounts and 2000 grit if all I'm trying to do is clean the gunk out of the thumb hole. Tape residue, lane out, rosin, Easy Slide , etc.
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