First step : salvage a cardboard pipe : there is no required size !! the build is based on the cardboard pipe you can find ! big or small no matter !

step 2 : cut wood circles.

USE THE TRIO DREMEL IT'S MAGICAL !!!!! ;)

You have to measure the EXTERNE diameter and INTERNE diameter of your cardboard pipe

You need 1 circle cut at the EXTERNE DIAMETER SIZE

and 2 circle cut at the INTERNE DIAMETER SIZE

When you have your circle you have to re-cut in the circle to get a ring - you can choose the size of the little circle in the circle.

Hope it's understandable ><

Now glue the largest ring on the cardboard pipe using the wood glue. Believe me it's will be verry strong.

Let dry during 24h00.

Then, as you can see on the picture, we will glue a second wood ring IN THE cardboard pipe.

I use a strip of wood cut to put a space between the two rings

DAMNED THAT'S HARD TO EXPLAIN !!!!

IMPORTANT do not discard the scrap wood. we will use them later !

Now take the measure between the second ring and the bottom of the carboard pipe. Cut 4 strip of wood with 1 centimer witness. and glue them. see PIC N°3