How to create a smoothie making human powered bike blender for less than $25

Step 5 If necessary, construct the long bolt

I couldn't find a at least 19 cm, M4-.70 bolt. If you were lucky, or just more skilled than myself, you can skip this step. For the rest of you, this piece must be constructed.

First, cut the heads off 2 of the 7cm bolts using the hack saw and vise. If you don't know how to do this, there's a good tutorial here: quick bolt shortening tutorial.

Then cut a 4 cm piece out of the 3rd bolt. Thread all the pieces together using the coupling nuts, with the order long, short, long.

Comments

[funwithfire93]

i was going to say you could use all thread.

[Esmagamus]

You know, there's M4 threaded stock. You just have to buy a meter of it and cut in whatever length you need.

[handyScrapper]

I was thinking the same exact thing.

[merseyless]

dito

[I_bike]

I was pretty sure some store would have some, but none of the hardware stores I checked did. If I decide to build more of them, I'll probably buy some online to save me the trouble of cutting bolts.

[Esmagamus]

Damn! I can find them in any hardware store around, no matter how small. As in Portugal many houses are made of stone, steel anchor bolts are very frequent and threaded stock is very pratical to use with them, as you can use one nut to open the anchor, cut the threaded stock and use another nut to hold whatever needed to the remaining part of the stock.