Lets Make Something banner



Youtube graphic
I have a youtube channel with over 750 Project Videos!

Hi, Thanks for visiting my website. My name is Will and if you have questions
or would like to
contribute projects or ideas you can contact me Will

Make the Predator Wrist Blades - Part 3

In this part of the tutorial we made the lid of the box and add the triggering mechanism. We get it to work!

Part 1 (the beginning) of this tutorial is here



To make the cover and trigger assembly we use parts 2, 12, 13, and 14.


The trigger

There is a mark on part 12 (the trigger part). This is where the toothpick goes. Start this hole with a pin and then pierce it with a toothpick like this.

Note that the trigger part will change for more effective work. I have modified this design a bit. I will show you more about this in a bit.


The top

Now glue parts 13 and 14 directly down to part 3. They are on each side of the trigger slot.


The trigger assembly

Put the trigger in that slot. And mark lines where the toothpick is.


Insert toothpick

Now, right on those lines you drew. Pierce through 13 and 14 with a toothpick. This toothpick is the pivot that the trigger works on.


Test rocker action

Remove the toothpick. Put the trigger in place then put the toothpick back in piercing through all three pieces like this.


old template

If your trigger looks like this you have the old template. Draw a line on it like this and cut away the yellow section.


NextOkay! Let's put in the rubber band and make this blade assembly work (continue)



Medieval Mace

Make a Medieval Mace (A MorningStar)

Fun, easy, and safe project made out of foam and sponge. But it is durable. How to make a Medieval Mace (includes my yutube video tutorial). Make a Medieval Mace



Sign up for my newsletter!

Do you like making projects and exploring a variety of hobbies?

Sign up for my free newsletter. I give you regular updates on hobbies and projects you can make. it is totally free and I don't share your email with anybody.