What Are Pool Tables Made Of?

The Frame: Hardwood, Always

Every real pool table starts with a hardwood frame. I'm talking oak, maple, mahogany, walnut, or sometimes birch, dense hardwoods that resist twisting and warping under the concentrated weight of a slate bed. The frame does two jobs: it supports the slate evenly so the playing surface stays level, and it gives the rails something solid to bolt onto.

On a quality table, the frame is a skeleton of cross-braced beams running the length and width, with heavy corner blocks and usually a central support running under the slate seams. My own 8ft table has a solid maple frame that probably weighs 180 pounds by itself, and you can stand on top of the slate with zero flex.

Budget tables use hardwood veneers over particleboard or MDF for the visible parts of the frame. That's fine for the aesthetic skirts and leg wraps as long as the structural frame is real hardwood. If you tap the frame and it sounds hollow or drum-like, you've got a particleboard body pretending to be wood. Pass on those.

The Slate Bed: The Playing Surface

The slate is the main playing surface, a 3-piece or 1-piece sheet of quarried stone milled flat to within a few thousandths of an inch. Tournament tables use 1-inch Italian slate; mid-tier home tables use 3/4-inch Brazilian slate; budget tables use 5/8-inch slate of varying origin. The slate sits on top of the hardwood frame, is leveled with shims, and the seams between pieces are sealed with beeswax.

I've covered slate in depth in another article, but the key fact for this discussion: slate is 80-85% of a pool table's total weight. A 9ft table weighing 1,200 pounds has about 650 pounds of slate in it. Everything else, frame, rails, pockets, felt, combined weighs less than the slate.

This is why pool tables don't move easily and why they're effectively permanent furniture once installed. The slate is also why pool tables are so level-stable over decades. Wood frames shift; stone does not.

Cushion Rubber: K-66 Is the Magic Profile

The rails wrapping the table are made of hardwood, but the business end, the part the ball actually hits, is a strip of molded rubber in a specific profile called K-66. That profile is an industry standard defined by the BCA (Billiard Congress of America). The K-66 has a triangular cross-section, roughly 1 inch tall at the back and 1 and 1/8 inches across at the base, with the nose cut at a specific angle to strike a 2.25-inch ball on its equator.

The rubber compound itself is natural gum rubber blended with synthetic additives. Artemis is the dominant brand, their K-66 cushion is on maybe 80% of competition tables worldwide. Super Speed and Centennial are the other two major names. A set of K-66 cushions for a 9ft table runs about $180-250.

Cushion rubber is the only part of the table that actually wears out in a meaningful way. UV exposure, temperature swings, and humidity all degrade rubber over time. After 15-20 years, even top-grade K-66 starts losing its bounce, you'll notice shots 'dying' off the rails instead of snapping back. That's the signal to re-rubber the table. It's a $400-600 job including labor and well worth it.

Cloth: 80/20 Wool Blend or Worsted

The green (or blue, or red) fabric stretched over the slate is almost always an 80/20 wool-nylon blend or a pure worsted wool. The 80/20 blend is softer, slightly fuzzy, and slows the ball more, it's what you'll find in most home tables and in casual bar boxes. Pro-cut worsted cloth like Simonis 860 or Andy 988 is shaved flat, speeds the ball up noticeably, and is what you'll see on every TV broadcast of tournament pool.

Weight is measured in ounces per linear yard. Tournament worsted cloth runs 20-22 oz. Home-grade 80/20 blend runs 21-24 oz. The heavier the cloth, the slower and slightly more forgiving the play. My own table wears Simonis 860 in blue, which is my personal preference because it tracks the ball clearly under bright light.

Cloth wears out. Normal home use gives you 3-5 years before the spot wears thin, the break area fuzzes up, and the rails show visible bald patches. Heavy use (daily play) cuts that to 1-2 years. Re-clothing an 8ft table runs $350-500 for labor plus $150-250 for the cloth itself. It's the most common maintenance expense a table owner faces.

Pocket Leathers, Rail Sights, and Wood Finish

The pockets themselves are wire or plastic baskets lined with leather (on quality tables) or synthetic leatherette (on budget tables). The leather drop pockets on my home table are hand-stitched English-tan leather with brass chains, they've held up for 18 years. Synthetic pockets crack and sag within 5-7 years but cost a quarter as much.

Rail sights (the dots or diamonds along the rail marking shooting lines) are typically mother-of-pearl or plastic inlays. On Brunswick Gold Crown tables they're real mother-of-pearl; on Olhausen Americanas they're high-quality plastic; on bar boxes they're thin stickers. They're mostly a visual reference, so even the cheap ones do the job.

The wood finish on the rails and frame can be stain-and-lacquer, polyurethane, or in premium cases a hand-rubbed oil finish. The finish doesn't affect play at all, it's purely aesthetic. But a good finish lasts 20+ years before it needs touchup, while a cheap spray lacquer will show wear and yellow within 5.

Putting It All Together

A complete 8ft slate pool table weighing in at around 1,000 pounds is roughly: 650 pounds of slate (65%), 180 pounds of hardwood frame (18%), 80 pounds of rails and pockets (8%), 40 pounds of cushion rubber (4%), 20 pounds of cloth (2%), and the rest in hardware, bolts, and pocket baskets. Every single component matters, a weak frame under a good slate still plays poorly over time because the slate can shift as the wood warps.

When I evaluate a used table, I check each component independently: frame for solidity, slate for flatness and seam condition, rails for rubber bounce, cloth for wear, pockets for structural integrity. You can upgrade any of these individually, new felt, new rubber, new pocket leathers, but if the slate or frame is compromised, the whole table is a write-off.

The beauty of quality construction is that a well-built slate table is essentially a lifetime investment. Replace the felt every few years, replace the rubber every couple of decades, touch up the wood finish once in 30 years, and the table outlasts the original owner. That's what you're paying for when you spend real money on a real table.