Autotool Walnut Sand De-Carbon Cleaner system - used once, like new

The listing

This is an Autotool Walnut Sand Dee-Carbon Cleaner system I bought last month to aid in removing 62 years of carbon buildup in the valve chambers of a 4-cylinder Continental L-Head motor. I couldn't think of anything that could make quicker work of this task, short of removing the motor, stripping it down, and sending it out for deep cleaning. I don't think anything could have done a better job in about 20 minutes like this system dod (see photos). It is essentially an industrial quality vacuum cleaner with attachments that take external shop air to blast ground walnut shells (sand) through the various adapters into the valve chambers, or as I did, valve seats, cylinder head, piston tops) to use the abrasive blast to remove carbon and even rust. The silicon rubber attachments connect the vacuum hose to the suction side of the chosen adapter which scavenges the walnut sand back into the machine for continual reuse. I bought this last month for just a tad north of $400 with another box of walnut sand and am selling it complete for $300. So no offers for less will be accepted. Located at tmy shop in Roseville off PFE Road. Reply or text for more information. -Tom (916) 212-six seven two two I don't see any further need for this machine, so am selling it as surplus to my needs.