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Wood Tubing Blocks

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I needed a set of blocks to hold bicycle tubing in my vise. These blocks allow you to hold thin wall tubing securely without denting or marring them. 

I chose to make 7 blocks. One longer block with three different tubing sizes and 6 blocks with one tubing size each. I chose sizes based on common bicycle tubing diameters. 
I created blocks for holding these diameters of tubing:
1/2" or 12.7mm
5/8" or 15.9mm
3/4" or 19mm
7/8" or 22.2mm
1" or 25.4mm
1 1/8" or 28.6mm
1 1/4" or 31.8mm
1 3/8" or 34.9mm
1 1/2" or 38.1mm
 
 
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Step 1: Materials

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I chose to use a harder wood for durability. I used some maple scrap a friend had lying around. I started by planing/joining the wood in to a 3x3" plank. I then used a chop saw to cut the plank in to 6 3x3x3" cubes and one 3x4.5" rectangular piece.  

Step 2: Drill the holes

Picture of Drill the holes
After I had 3x3x3" cubes and a 3x3x4.5" block I got ready to drill some holes. In order to keep the blocks as strong as possible it is best to drill the holes perpendicular to or through the grain. This will prevent the blocks from cracking when you clamp the tubing in them. I marked the center of each of the 6 cubes on the face grain. For the the rectangular chunk I marked the centerline and spaced three marks evenly across the piece. I used Forstner bits to drill clean, uniform holes. 
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