1. I would rather have my bike stand while I go buy some satay, but I didn't want a stand attached permanently to the bike
2. I also have lots of aluminium tubes left over from other projects
Bike stand must be light, easily carried in a backpack next to my lock, easily attached and removed,
Step 1: Material and Measurements
Cut and mark your tube. For my pedal/bike, the measurements are 75mm, 100mm, 80mm, 100mm and 75mm (pedal depth, distance to ground, pedal width, distance to ground, pedal depth)
You should file down any shape edges right after cutting. You don't want sharp edges later when you start bending the tube.
Step 2: Flattening the Tube
Start by bending the middle part. You need to fatten the middle part, but extend the flattened portion about 10mm beyond the bending point. This helps you bend it easier without snapping off the tube.
Step 3: The Middle Bend
Release the stand at 45 degrees, push the tube forward by about 5mm (which is why I allowed a 10mm distance when flattening earlier), and bend further.
Important points about bending tubes:
2. Use body weight; lean
3. Avoid sharp edges (hence, the filing earlier)
4. Wear gloves
Step 4: Bending the Ends
Remember the 10mm allowance when flattening.
Step 5: Fit and Test
1. Easily installed and removed (adjust end pieces, make sure both flat ends are aligned)
2. Bike is steady (adjust the bend angle)
Remember to do any adjustments at this stage really slowly. The flattened parts allowed bending in one axis, but limit in others.
Step 6: Using the Stand
For the record, this stand weighs in at under 80g, or around 2.5oz.