Spanner wrench heated and molded onto the foam block. Here's my DIY
http://www.the370z.com/diy-section-do-yourself/84479-diy-where-place-your-spanner-wrench-mod.html
Spanner wrench Mod.
This mod took me about 15 minutes once it reached the desired temp.
Bake your spanner wrench in 500* oven for 10 minutes.
Take out of oven and tie a piece of wire to pull it off later.
Place your hot wrench at your desired spot.
Use appropriate tool or utensil to press your wrench into the foam block.
Press your hot wrench into the block until the wrench has reached the desired depth.
Make sure it is evenly laid across.
Using the attached wire, pull off the wrench from the block.
There will be melted foam stuck on the wrench. Do not scrape it off. Leave it alone and let it cool down. It will peel off on its own once it cools down.
]Repeat process for your 2nd spanner wrench.
Heat a piece of spoon on desired spot to create an area where you can stick your finger and pull your wrench off the block.
Press the hot spoon until you reach desired depth. Again, there will be melted foam stuck on the spoon. Do not scrape it off. Leave it alone and let it cool down. It will peel off on its own once it cools down.
Peel off the foam from your wrench and place it onto the chosen spot and admire your great work!