This a really simple approach to making linear slides. These can be used for many different applications and are quite easy to make.
The parts list is as follows
1.a few feet of angle iron depending on how many your making you may need more or less also the size is up to you just make sure to match the square tubing with it. You can buy this at your local metal shop or perhaps even somewhere like home depot
2. Square tubing, once again your choice of length and size. Also get lengths from you local metal store.
3. 8mm or 5/16 bolts, nuts , and washers to match them, these can be found at a local hardware store like home depot. You could also use different sizes if you wanted.
4. Bearings, make sure the inner diameter matches your bolts. These can be bought here or maybe a hardware store
Step 1: Cutting
This slide is very customizable. You can make it just about any length you want, there is also the option to scale it up if you wanted to.
For my application I need by slide to be
around 6 inches long so I cut my lengths of angle iron and tubing to 6 inches, but you can cut yours to whatever length you need just make sure that the bearings have enough distance in between.
Step 2: Drilling
This step is very simple just make sure you align the holes to the middle of the angle iron on both sides, oh and make sure that you drill them to the right size. Preferably use a drill press
Step 3: Assembling
Pretty strait forward, get all your parts together, you may have to ream your holes a bit.
Then just tighten down the nuts and your good to go