Re: Adding rubber cleats on tracks? Joe Sommer help! [TANKS]

["Marc en Wendy" <marcmethorst-at-zonnet.nl>]

This is the e-mail Joe sent a while ago.

Marc

----- Original Message ----- 
From: "Joe Sommer" <anvilus9-at-adelphia.net>
To: "Marc en Wendy" <marcmethorst-at-zonnet.nl>
Sent: Friday, June 17, 2005 3:50 AM
Subject: Fwd: Track Cleats


>
> original message from Chatten per your request
>
> Joe
>
>>Feel free to use the spare cleats to make masters for the molds. You need
>>to mill off the outsides of the track segments, as shown on the attached
>>drawing. You will also need to remove the tracking tabs.
>>
>><http://www.smoothon.com>http://www.smoothon.com
>>   Mold Max 30 - silicon mold material (requires vacuum bell jar to get
>> out bubbles)
>>   PMC-790 - urethane rubber is what we used
>>
>>One "Trial Size" of Mold Max 30 should be enough. I will send you our
>>PMC-790, plus the softer stuff. I also found our aerosol spray can of mold
>>release, which I will send along (be careful not to overdo it).
>>
>>You will want to find a source for 5cc syringe bodies. They are very
>>useful for injecting urethane into the molds.
>>
>>The best way to make a mold box (for pouring the silicon) is to wrap tape
>>around the milled-off track segment. I will send you some photos tomorrow
>>of the process.
>>
>>Once you have enough silicon molds, you can lightly spray them with mold
>>release, insert track segments into each mold, and cast urethane around
>>the track segment. (Try not to get mold release onto the track segments.
>>Also be sure to very thoroughly mix the urethane, or else it will not cure
>>correctly.) After the urethane has hardened, you can peel the mold away
>>from the track. Some excess urethane may need to be cleaned up. Then you
>>need to cure the finished pieces in an oven at 175 degrees Fahrenheit for
>>a couple of hours.
>>
>>Our experience was that the entire casting/curing process for 20 tracks
>>takes about five hours. You will need about 200 tracks, so allow time.
>
>
> **********************************************
> Joe Sommer, Anvilus Machine Works
> 2378 Nantucket Circle, State College, PA 16803
> 814.234.4773     anvilus9-at-adelphia.net
> http://www.anvilus.com

cleat_v4.pdf