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Thank you, Bill! I don't know much about the clay/Bakelite balls except that I recall a straight pool video where I believe Grady Matthews was commentating and commenting on the old clay balls. I think he said they banked truer, but I don't know if he said anything about throw. He might have...

I found an article on Dr. Dave's site dated September 2006. https://billiards.colostate.edu/bd_articles/2006/sept06.pdf His graph looks very similar to both Bob's and mine, but the three graphs have their differences. For soft shots, both Bob and Dr. Dave peaked at 6° or more throw, whereas I...

You're quite welcome! I think sometimes throw could be why we miss a shot that otherwise we were dead on to make. So knowing when to expect it is a great sense to have.

Hey, Patrick. It's been a long time since we've last conversed. Good to see you! Yeah, I don't know if I was right to leave that gap for the reasons I suggest. But it felt like the right thing to do? Not very scientific, I know. :confused: If you have a link to Dr. Dave's test, I'd love to see it.

Yes, the balls are about 2 years old, but they are in like new condition. I polished them with Aramith Ball Cleaner about a week before I took the video. Sadly, no I didn't try testing dirty balls or different sets of balls. Maybe someday I'll have access to more sets and access to more energy...

Wow, Bob! I'm a little embarrassed that I'm suggesting to others that they read your articles, and I somehow missed this. I'm also stunned that I used such a similar setup. Maybe I did read this article at some point in the past and it was buried in my subconscious. I apologize that I didn't...

It took me a couple of months to put this together. I wanted to find out what throw ranges to incorporate into my printable practice tools, so I recorded this experiment. I finally finished editing it tonight and got it up on YouTube. I actually learned a few things, and I think you'll be...

Throtractor, PortaGuards and Frangle Rock Throtractor: a tool for precision marking of repeatable practice shot setups. It measures angles, incorporates ball fractions, and compensates for the effects of throw. PortaGuards: optional tools for use with Throtractor that are designed for...

My pleasure, Mirza! It has been and continues to be a labor of love. For anyone who is confused about what the tools can do, I'm creating two posts with images of the tools in use and descriptions of what each does taken from the website. I also just edited some of the instructions on the...

Hey, everyone. I've been working long and hard on a system that I'll be sharing in a few months that helped my game, but along the way, the necessity to have precision tools for testing the system led me to design what I'm posting about here. But these 6 tools are not only for testing. They're...

Cool. I did this almost exactly as described about a year ago. Here's my contraption. I cut a deli container down and sliced out two semicircles for the laser pointer. A rubber band holds the button in. I only used it a couple of times, but it's pretty cool.

I mainly post in the 14.1 forum, but I think this information would be useful for any game that ever deals with clusters. I came up with a couple of techniques for finding all possible direct tangent paths off of object balls to go into clusters. This is the first time I ever tried to animate...

This tip is for side of the rack break shots. It's probably best to sight the 90 degree tangent off of a break ball to find what portion of what ball in the rack the cueball will strike. This way you know how to strike the cueball to keep it under control. But if you don't want to take the...

Just kidding, of course. Dan and I argued about this in another thread. And I am walking around the table more! What I think Darren saw: -The way to approach the 4 balls that were already open below the rack was from the lower left side of the table, but nothing led easily to get down there to...

In my mind I'm walking around the table to smack you, Dan. :mad:

Video The player was Darren Appleton at the 2015 World 14.1 Tournament originally streamed by AZBtv. I chose this rack for a reason. Knowing Darren to be a 14.1 player who plays very thoughtfully and carefully and plans ahead, after surveying the layout for 45 seconds he decides to take what...

Thanks, Chris. I think you covered every possibility, so here are the last couple of shots to the break ball. The player stuns up for the 5-ball stop shot and follows off of the 6-ball key ball for the 9-ball break.

Thanks for your input, ChrisinNC. The player played the 1-ball bouncing off of the foot rail to here.

Welcome, Brian. Well, the player took the 12-ball off next. How about from here?

The player played the 10-ball drawing back to here. In what order would you play these last 6 balls?