If your boxing ring is for tournament and competition use, you need to check regulations and specifications..
WBO
USA BOXING TECHNICAL RULES - The Ring
AIBA Rules regarding rings
Canadian Professional Boxing Federation
For other Sanctioning Bodies and Organizations, you will need to contact them for ring specifications.

RINGSIDE
Balazs
Amber Sporting Goods
Everlast sells top quality rings. Prices are high, but if you can afford it, they look great. Need to order the catalog.
Check eBay. On occasion they have rings for sale. Check the highest prices first or your search will produce a lot of books and such.
Prime Enterprises
TITLE BOXING

RINGSIDE Aluminum Dual Purpose Ring

PLATFORM
A platform, gives your ring that professional feel. You need some construction experience.
Frames are made of metal or wood. Metal frames have their advantages, but wood frames will cost less, and can be just as strong.
If you have the skill to build/wield a metal frame, you don't really need our help, just some proper measurements and such.
For compition, you need to check height requirements with the sanctioning body. If for the gym, training purpose only, it is up to you. If over 18" high, you will need stairs.
The floor of the ring should extend a minimum of 18" past the ropes.
We have seen several boxing gyms, that bought a floor ring, then built a platform.

CORNER POST
Corner posts are used to attach the ropes, and depending on your design, serve as supports for the platform. Usually corner post are square, but round is acceptable. If you built a metal frame, they are incorporated into the design of the platform.. A major concern will be placements of the rope attachments. The bottom rope can be from 16"-18" from the platform. The top rope can be 52"-54" with the other ropes evenly spaced between. It is best to weild attachment loops on, but you could drill holes and use eye hooks. See USA BOXING TECHNICAL RULES for helpfull information.

CANVAS
The floor of the ring, shall be completely covered with canvas.
For custom size rings, your main concern will be the canvas. You will need to special order the proper dimensions.
ROSEBRAND will make any size. Canvas can be very expensive.
Canvas comes in different thickness, measured by the ounce. 16 oz will last many years, but 18 oz is better.
Grommets should be evenly spaced, a maximum 12".
If you feel creative and can afford, a flag company can make designs with your logo.
Also, check tent manufactures. Paint supply?
You can also buy vinyl covering, it is easier to clean, but can be slippery with excess sweat.

FOAM PADDING
Most padding comes in 1"thickness, but different sanctioning bodies require different thickness. It is usually best to order it through an established source. Other foam we bought, looked good, but with the sweat and hard use, didn't last too long.
To cut foam, use an electric knife. You can use a razor knife, but difficult to get that perfect smooth cut.
You will need to have triming around the edge of the platform, to keep foam in place.

ROPE (4)
Most rings have 4 ropes, but 3 rope systems are usually acceptable.
Rope is normally 1" manila. We bought our rope through a local hardware store, but it is not too much extra to buy from Ringside or online. It is heavy, so check shipping cost.

ROPE COVER (4)
A rope cover will prevent rope burns, a must have. Can be made with nylon, vinyl, misc. It is almost easier to buy pre-made sets. Standard colors are red, white, or blue.

ROPE CLAMPS (16)
Four clamps per rope recommended. These are generally just your basic hose clamps. Great for attaching rope ends without having to splice the rope. You can buy at any hardware store for around $1. They are always breaking, some brands more than others. Wire clamps are great, cost extra money.

ROPE CLAMP COVER (4)

ROPE RETAINER RING (16)
These are just metal loops. You put the rope through them and attach to turnbuckle. This gives the rope that little play.

TURNBUCKLES (16)
Normally made from forged, galvanized steel with hook end fittings.

TURNBUCKLE COVERS (16)
Covering with foam padding and Velcro closure.
For any kind of tournament or business use, you may be required to have turnbuckle covers.
They are a safety feature and good to have, but depending on your budget and uses, you don't necessarily need.
Unless you have resources to make your own, it is easier to buy them. An option is to buy foam pipe wrap/ pipe insulation.

CORNER CUSHIONS (4)
Essential for every ring, required for safety reasons. Triangle shaped pad is normally 48" long. Give your ring that final touch with custom designed corner cushions. Most manufactures, such as Everlast and Ringside, will make corner cushions with your design.

ROPE SPACERS
Mandatory for all rings. Keep proper spacing of the ropes. Mostly you see nylon straps with advertising on them. RINGSIDE | For the gym, you can use pieces of rope(1/4" Laundry line).

RING SKIRT

RING APRON PADS
An extra safety feature, and almost always used for advertising.

RINGSIDE Rope Retainer Ring
In this photo you can see, rope with rope covering, rope retaining ring, turnbuckle and turnbuckle cover.






TITLE BOXING
Turnbuckle Covers