Thursday, 2 August 2007

DIY Punch and Die set (Rivets, Bolts and Nuts tutorial)

(versión en Español)

As I feel too lazy to do a proper post (weather it's too hot in Spain at this time of the year), I will revamp an earlier one I did on WIP about riveting techniques. Hope you like it :)


In fact, I have been asked many times how do I produce all those rivets I use on my scratch built models (about 500 hundred for a medium tank).

Having the right tool at hand helps a lot. However, the tools available at stores are pretty expensive (check this excellent tool from Historex Agents):

Historex's Punch and Die set

If we want to produce simple flat, round rivets (there is also one set for hex nuts and bolts, but it is outside of the scope of t
his tutorial), there is a simple way to build a homemade punch and die set... This is how I made mine:

We will need the following tools:



  1. Low-speed/High-torque drill/screwdriver. You can use a normal drill, but avoid high-speed settings. The one shown here simply excels at making small diameter holes in hard materials.
  2. Drill bits. One for each rivet diameter desired. Those ones are already prepared for electric screwdrivers.
  3. For diameters under 1 millimeter, you will need normal bits and:
  4. Finger chuck for screwdrivers. It is is used to adapt the bits to the screwdriver (you can substitute the screwdriver for another power tool, but I recommend you to use always low rpm's if you don't want to snap bit after bit).
  5. Center punch. For marking the start of the hole in the metal.
  6. Hammer (same as above).
  7. Oil. Used to lubricate bits while drilling metal. Just place some drops from time to time or the bit could get stuck and break.
This image shows the materials I used:

You will need:

  • A piece of steel. I bought it at a hardware store.
  • A piece of clear plastic of the same size. I obtained it from one discarded bay cover of my PC.
  • 2 small brass (or plastic, wood, whatever...) rods with top screws. The screws are nice, but not really needed, I took those from my office.
  • You can not see it, but there are four adhesive pads on the bottom to separate it from the working surface.
I put together the metal and plastic plates, securing them with strong adhesive tape, I drilled the holes for the brass rods at both ends of the metal piece, starting to drill from metal to the plastic (this is important) and trying to dril the hole as perpendicular as possible (if you have a drill press, use it).

Then I glued the brass rods to the metal piece. What we have now is a metal base with a clear plastic cover that can be raised. Now, what we have to do is to drill other holes anywhere you like for each rivet size desired.

We have finished our die. To use it, slide a plasticard sheet inside, trap it with the clear lid, put a punch in its hole (as shown above) and use the hammer.

You wil probably not find punches for the smaller rivet
sizes (1 mm or less). However, I found a solution in the page of a german guy (Unfortunately, that page no longer works).

He simply used the same drills used to drill the holes as punches (the flat part gets in contact with the plasticard). I have reserved some cheap or broken drills for this.


Time to start riveting our models!

RIVETS

You well need the punch and die set, suitable punches, a small hammer, some glue, a hobby knife and a little (rather thin) plasticard.


You can see that I have made many small plasticard disks, now I will put then in place.

First, I put a small drop of glue in place.


Then I hold a rivet using the point of a hobby knife (if you use a new blade, this is much better than using tweezers, believe me) and put it in place.

The final result:


BOLTS AND NUTS

There are punch and die sets capable of making hex pieces, but for our purposes we will suppose we do not have one of them.

In order to do the nuts we will need hex poliestirene rods of different measurements:

I select the desired width and cut regular slices with my hobby knife.

I put a drop of styrene cement in place

And put the bolt on.

If I wanted to do a nut and bolt, I would then do some rivets, smaller than the nut I have just did.

Then I put a drop of cement in place...

And proceed exactly as I did above with the rivets:

And that is. As you can see it is not very difficult, it just requires a little patience to be done. You can also use those tiny styrene disks as other things instead of rivets: coins, lids, lenses, etc.

12 comments:

Saw said...

Thank you for writing this, this is a really simple yet effective way to totally trick out your pieces.... well done!

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