Sizes in mm. If that's too expensive for you then just make some free time and go get it there yourself. If you need something cut then metal supermarket is definitely your best option, their precision tolerance isn't the best so account for an extra inch and cut it more precisely yourself.
I should add, they only sell in 20 lengths.. never buy structural steel from Lowes/Home Depot/hardware stores unless youre itching to pay a premium. Check with local metal recyclers.
They will often sell good steel they have taken in as scrap for pennies on the dollar. Bed, double, Wood and steel tubing construction. Dillon supply in Raleigh has the best prices Ive found. They should fit square section tubing of any wall thickness as long as the external HSS Shapes - Rectangular and Square Tubing.
Estimate the length of each piece & add them together and find out how much steel you're going to need. 1" square tube with 1/8 wall is about 1.5 lb/ft. Steel is 7.8 g/cc. 
By stlfinder.com. $1/lb in moderate quantity, or less in larger quantity, is pretty normal. Depends on the quantity and sizes you want to order.
" caster stems and with 16-gauge 1" steel tubing. Simple outside end cap for 1" steel box section furniture or welding projects. Steel is usually sold by weight so thickness is a factor. the part has the model and the blank Press J to jump to the feed. added my location to the original post, does home depot offer competitive prices to a steel distributor/metal supply house. FOR MORE QUESTIONS PLEASE ASK!!!! Im trying to build a table and Im gonna ask for steel for my birthday but lowes seems really expensive, where is a good place to buy steel (1 square tubing), we have a metal supermarket near us but we havent had a chance to get yet due to their odd hours, Im assuming shipping would be extremely expensive anywhere online since the longest piece I need is 6, I live in Apex NC and go to school in Sanford NC so that would be an option too since sanford is a bit more industrial than Apex. If it fits in a car it wouldn't cost that much. Look up local steel distributors, they can hook you up with anything you need. So I decided to share it to the World too :). Develop a cut list to see how many pieces you can get out of a 20' piece to get a quantity. Steel should cost you somewhere well under $2/lb in normal structural shapes, like tubing and bars and so on. This is a very common product, and it sounds like you don't need much - if you don't live in a place with a metal supply house, you can get it at Home Depot. Powered by STLFinder search engine.
I remixed this design by adding chamfers to it because it's easier to push the table if the caps are chamfered. Steel is usually sold by weight so thickness is a factor. This includes but is not limited to welding, machining, casting and general fabrication. These caps just push over the end of the tubing to prevent it marking carpets etc. HSS 2x2x0.250HSS 2x2x0.1875HSS 2x2x0.125HSS 2x1.5x0.1875HSS 2x1.5x0.125HSS 2x1x0.1875HSS 2x1x0.125HSS 2.25x2.25x0.250HSS 2.25x2.25x0.1875HSS 2.25x2.25x0.125HSS 2.25x2x0.1875HSS 2.25x2x0.125HSS 2.5x2.5x0.3125HSS 2.5x2.5x0.250HSS 2.5x2.5x0.1875HSS Lid for end of section of 1.5" square steel tubing. Scale length accordingly. This subreddit contains almost every aspect of metalworking. inside u will find.. Engineering data: This way you don't need to take time off work, spend money on gas and get your car dirty. My guy says it's for Friday beer money , You can purchase a cordless grinder with cut-off blades for the price a few cuts at a supplier. https://www.alibaba.com/trade/search?fsb=y&IndexArea=product_en&CatId=&SearchText=SHS http://sketchup.engineeringtoolbox.com/suare-hollow-hot-formed-sections-c_49.html NC program made for 3 axes wissner router, with milling tool with diameter 6mm, All credits go to @kelh88. Steel my computer tells me its,, Steel: an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range. At least that's how I justified the purchase. The distributor can usually cut them in half if transportation is an issue, so you'd do the same thing, but for a 10ft overall length. Purchase here: Press question mark to learn the rest of the keyboard shortcuts. Then for shipping just find an affordable courier service near you so they can pick up the pieces for you and drop them at your place. Right-Angle tool for Carpenters. You can probably get a 20' stick of 1" square tubing 1/8 wall for 20 to 40 bucks which should be plenty to hold a table. They charge around $5 to cut it in half, and you have to get there during normal business hours, but theyll load and cut it for you. Square Linear Steel Table by Muuto 3D model. Plus delivery and cutting if you want it in non-stock lengths. One of the best Carpenter, who I know, gave me advice that the needed tool to I have to make for him. You can probably get a 20' stick of 1" square tubing 1/8 wall for 20 to 40 bucks which should be plenty to hold a table.
I should add, they only sell in 20 lengths.. never buy structural steel from Lowes/Home Depot/hardware stores unless youre itching to pay a premium. Check with local metal recyclers.
They will often sell good steel they have taken in as scrap for pennies on the dollar. Bed, double, Wood and steel tubing construction. Dillon supply in Raleigh has the best prices Ive found. They should fit square section tubing of any wall thickness as long as the external HSS Shapes - Rectangular and Square Tubing.
Estimate the length of each piece & add them together and find out how much steel you're going to need. 1" square tube with 1/8 wall is about 1.5 lb/ft. Steel is 7.8 g/cc. By stlfinder.com. $1/lb in moderate quantity, or less in larger quantity, is pretty normal. Depends on the quantity and sizes you want to order.
" caster stems and with 16-gauge 1" steel tubing. Simple outside end cap for 1" steel box section furniture or welding projects. Steel is usually sold by weight so thickness is a factor. the part has the model and the blank Press J to jump to the feed. added my location to the original post, does home depot offer competitive prices to a steel distributor/metal supply house. FOR MORE QUESTIONS PLEASE ASK!!!! Im trying to build a table and Im gonna ask for steel for my birthday but lowes seems really expensive, where is a good place to buy steel (1 square tubing), we have a metal supermarket near us but we havent had a chance to get yet due to their odd hours, Im assuming shipping would be extremely expensive anywhere online since the longest piece I need is 6, I live in Apex NC and go to school in Sanford NC so that would be an option too since sanford is a bit more industrial than Apex. If it fits in a car it wouldn't cost that much. Look up local steel distributors, they can hook you up with anything you need. So I decided to share it to the World too :). Develop a cut list to see how many pieces you can get out of a 20' piece to get a quantity. Steel should cost you somewhere well under $2/lb in normal structural shapes, like tubing and bars and so on. This is a very common product, and it sounds like you don't need much - if you don't live in a place with a metal supply house, you can get it at Home Depot. Powered by STLFinder search engine. I remixed this design by adding chamfers to it because it's easier to push the table if the caps are chamfered. Steel is usually sold by weight so thickness is a factor. This includes but is not limited to welding, machining, casting and general fabrication. These caps just push over the end of the tubing to prevent it marking carpets etc. HSS 2x2x0.250HSS 2x2x0.1875HSS 2x2x0.125HSS 2x1.5x0.1875HSS 2x1.5x0.125HSS 2x1x0.1875HSS 2x1x0.125HSS 2.25x2.25x0.250HSS 2.25x2.25x0.1875HSS 2.25x2.25x0.125HSS 2.25x2x0.1875HSS 2.25x2x0.125HSS 2.5x2.5x0.3125HSS 2.5x2.5x0.250HSS 2.5x2.5x0.1875HSS Lid for end of section of 1.5" square steel tubing. Scale length accordingly. This subreddit contains almost every aspect of metalworking. inside u will find.. Engineering data: This way you don't need to take time off work, spend money on gas and get your car dirty. My guy says it's for Friday beer money , You can purchase a cordless grinder with cut-off blades for the price a few cuts at a supplier. https://www.alibaba.com/trade/search?fsb=y&IndexArea=product_en&CatId=&SearchText=SHS http://sketchup.engineeringtoolbox.com/suare-hollow-hot-formed-sections-c_49.html NC program made for 3 axes wissner router, with milling tool with diameter 6mm, All credits go to @kelh88. Steel my computer tells me its,, Steel: an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range. At least that's how I justified the purchase. The distributor can usually cut them in half if transportation is an issue, so you'd do the same thing, but for a 10ft overall length. Purchase here: Press question mark to learn the rest of the keyboard shortcuts. Then for shipping just find an affordable courier service near you so they can pick up the pieces for you and drop them at your place. Right-Angle tool for Carpenters. You can probably get a 20' stick of 1" square tubing 1/8 wall for 20 to 40 bucks which should be plenty to hold a table. They charge around $5 to cut it in half, and you have to get there during normal business hours, but theyll load and cut it for you. Square Linear Steel Table by Muuto 3D model. Plus delivery and cutting if you want it in non-stock lengths. One of the best Carpenter, who I know, gave me advice that the needed tool to I have to make for him. You can probably get a 20' stick of 1" square tubing 1/8 wall for 20 to 40 bucks which should be plenty to hold a table.