JM has one

| {{:sbt:920:920bg.jpg?300|}} |
| Above: SBT 920. [[http://www.southbaytech.com/shop/920.shtml|Source]] | 


====== Arm ======

The workstation supports two arms and there are left and right versions of each.  Its unclear if they can be easily converted.

===== 92001 =====

For polishing long objects like crystal rods


===== 92002 workstation =====

| {{:sbt:97:img-014.jpg?300|}} |
| Above: 92002 with 155 jig. [[http://www.southbaytech.com/appnotes/97%20Accessories%20for%20the%20Model%20920%20Lapping%20and%20Polishing%20Machine.pdf|Source]] | 

For lapping jigs.

===== Alt workstation =====

| {{:sbt:920:920bg.jpg?300|}} |
| Above: SBT 920. [[http://www.southbaytech.com/shop/920.shtml|Source]] | 

This is shown on website 920 page but I don't see it referenced in any of the supporting material.  Is this a newer version of the 92002?


===== 92003 non-contact polishing arm =====

when only specimen should hit plate


===== 92022 yolk sweep =====

Sweeps jig across lapping wheel.  More uniform lapping and more even wear on wheel


===== 02-02261 manual specimen yolk =====

Non-motorized workstation.


====== JM 92002 repair ======

| {{:sbt:97:img-012.jpg?300|}} |
| Above: healthy factory 92002 configuration. [[http://www.southbaytech.com/appnotes/97%20Accessories%20for%20the%20Model%20920%20Lapping%20and%20Polishing%20Machine.pdf|Source]] | 


| {{:ebay:s.scherets:171348121700:1.jpg?300|}} |
| Above: surplus 92002. Source: eBay s.scherets, item 171348121700 | 

Above unit has the drive moved from the main arm to the support arm.  Wonder why
====== References ======