I built a free physics-based Carambole & Danish pin billiards simulator (runs in the browser)

Hi all — I'm a retired engineer and billiards player, and I've built a training tool I'd like to share. Completely free, no account, runs right in the browser on desktop or tablet.


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It's called CaromSim:




The physics is based on Han (2005) and Alciatore. I made it as a teaching tool for my club and would love feedback — does the cushion and spin behaviour feel realistic, what's missing, what would help you practice?

Looking forward to all feedback.

Link: https://lennovation.neocities.org

Thanks for taking a look!
Where are the pockets? How am I going to make a ball??😁😁

Pool Ball Collecting.

I have Italian ancestry so during family picnics we always played bocce growing up. I'll be giving them a try tonight.

I'm looking forward to your website. I've used a site called namecheap for a domain and it only cost a few bucks a year to keep it.
I might be able to do it on our company server, so I only have to register a domain. I have a name, but it is quite long, so I am not sure if it is a good idea. But all the good short ones are taken, and I want it to be descriptive as well.

So my idea so far was:
Billiard Games Library

Not sure if this might be too long for people to remember, but I think it is an easy name 🙃🫣

How would you do this?

This is doable for two reasons.
1. 8 ball is dark has picked up more dirt, contacting with spin it will grab more unless you hit it too hard.
2. Use a horizontal 9 o'clock cueing with your goal to hit straight at the short rail with a speed that allows the spin you've transferred to the object ball to grab having 8 ball rotation applied.

bm
My only retort, since most players are not 6'6'' like myself, I don't think the OP can comfortably reach the shot.

How would you do this?

Well if you are want to bank it foot rail to head rail to bottom right pocket, I Don't like it. The second rail normally shortens from the angle of the first rail so that 9 ball looks to be blocking it.(Well for me) Well I don't see anything that I like. My hail Mary would be banking foot rail to top right past the 9 ball. Blocking the pocket would be hoped for as the foot rail side rail brush the 9 would be my goal. If a tad short and friendly table roll it might just drop but blocker gives at least a slight hope.
if you had to bank
i would try to bank pocket speed to block that pocket or maybe slop it in
the double bank to the pocket you intended i think the 10 ball is very close to the path the 8 has to take

Stats -- Justin Bergman vs. Tom Cousins 8-Ball Race to 30 on a 7-Foot Table, July 2026

This is a very interesting analysis. Most commentors post match continued to claim that Bergman was breaking bad and that Cousins dominated in that regards, but Bergman was playing significantly better after the break. Cousins had one more miss and 2 more fouls but essentially broke and ran more frequently on his breaks while having only one more successful break and running out more in Bergman's dry breaks than vice versa. Am I reading this wrong that essentially Cousins simply played better in almost all factors of the match?

Dynasphere Challenger set.

I recently purchased a set of 'Dynasphere Challengers' from Geoffrey @ 'Bradshaw Billiards'.
Geoffrey gave me a great deal on these balls and I must say, 'Dynasphere' is onto something!!
My set should have come with a 'How to play for Dummies' manual, 😁 bcuz I was to find out later, as the night wore on, there was a small learning curve to playing with this set.
Seriously!!
I had to back off.
Best way I can describe them is 'Crisp'.
They are lively!!
Forced to reign in the horses, so to speak. It was getting embarrassing!!
Thick on most of my cuts, or so it seemed.
These balls took spin extremely well, the rebound angle and distance threw me for a bit. More elastic??
I was long on shape with too much spin damn near the entire night, on a half-tip, no less. 🤦🏻‍♂️
These balls impressed.
This is mostly supposition on my part as I haven't had them very long, but imo, they seem to stay cleaner than my other sets and I haven't noticed any scratches or blemishes on any of the balls. I hand polish them at nights' end.
Premium phenolic resin!!
I'm not used to playing with top shelf equipment.
These 'Dynas' are, imo, Top Shelf!!
I stand by it!!👊🏻
Look out 'Aramith!!'
Best set of balls at this price point I've ever owned.
Tolerances were tight!!
I weighed the set.
Weight came in + or - 0.5 gram.
Measurement came in + or - 0.26 mm of each other!! 😳 (Digital Caliper.)
Tight!!👊🏻

If my balls are tight, I'm happy!!😆

If you're on the fence, Jump!!
Check out 'Bradshaw Billiards' or PM 'Geoffrey' while he's still in a giving mood. 😉

Thank you for doing me a solid Geoffrey. 👊🏻
How much were they?

Dynasphere Challenger set.

I got a set also from Bradshaw billiards, Great Guy, and fantastic balls, You can read what my impressions were about them in that original posting. Looks like I'm not alone in how they play. They are fantastic. It's been about a week and a half to two weeks for me and I haven't cleaned them yet, don't know when I will feel the need to clean them, and I still use masters chalk. I virtually never chalk my break stick at home though.
These balls are the real deal.
One other thing, they rack tighter easily than my Aramith Premiums. My Aramith Premiums are about 7 yrs old though. I do have a set of Aramith Duramiths, but really cant compare as I virtually never use them. I only use them when my wifes friend is over, she is picky. They are a good looking set of balls but do get dirtier faster than these Challengers, that's the only difference at this time I know.

What beginner pool tip do you wish you learned sooner?

Dealer here, but this is just a player tip. Wish someone told me early that a soft, still bridge hand matters more than a fancy stroke. I spent a year muscling shots with a death grip and wondering why my cue ball skipped or curved on longer shots. Loosen up, keep your grip hand relaxed through contact, and let the tip do the work instead of jabbing at the ball. Also seconding the center ball hit comment: most guys aim for center and are actually a tip or two off, which throws off every speed and spin calculation downstream. Get a buddy to watch your stroke on a mirror or slow-mo video, it's humbling but it fixes more leaks than any drill.

If you're shopping for your first cue, worth knowing what actually matters at the beginner price point, fuller guide here: https://billiardhome.com/blog/best-pool-cues-for-beginners
In my opinion if you don't learn YOUR vision center you are wasting your time, it's not eye hand coordination, it's eye, brain hand coordination, if your brain is telling your hand you are hitting the cueball straight but you are not you will struggle with this game.

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