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THE SOMMA CENTER SETTING GAGE
MAKES IT EASY TO SET CIRCULAR AND DOVETAIL FORM TOOLS EXACTLY ON CENTER.
ALL
THAT IS REQUIRED IS THAT AN ADJUSTABLE COLLAR POST ASSEMBLY BE INSTALLED
ON THE TOOL POST AND BE ADJUSTED TO CENTER PER THE FOLLOWING
INSTRUCTIONS.
TO
SET TOOL TO CENTER THE SWING ARM SETTING GAGE IS PLACED OVER THE COLLAR
POST AND THE TOOL IS ADJUSTED SO THAT IT CONTACTS THE FOOT OF THE GAGE
AND LOCKED IN PLACE.
THE SETTING GAGE IS THEN
REMOVED AND CAN BE USED ON ANY OTHER SAME SIZE MACHINE.
THE ADJUSTABLE COLLAR POST IS LEFT ON THE TOOL POST AND NEED
NEVER BE SET AGAIN EVEN IF THE TOOL POST IS REMOVED FROM THE MACHINE.
(NOTE: IF TOOL POST IS USED ON A DIFFERENT MACHINE IT MAY HAVE TO
BE RESET FOR CENTER BECAUSE OF VARIATIONS FROM MACHINE TO MACHINE.)
INSTALLING
THE ADJUSTABLE COLLAR POST AND BOLT ASSEMBLY:
MOUNT
CIRCULAR OR DOVETAIL FORM TOOL POST TO CROSS SLIDE USING “T” BOLT
(PT 1).
SUPPLIED WITH THE “ADJUSTABLE COLLAR POST AND BOLT ASSEMBLY”.
IF
YOU ARE NOT USING A RISER BLOCK UNDER THE CIRCULAR TOOL POST INSTALL THE
RISER SPACER (PT. 6) OVER THE BOLT AND ON TOP OF THE TOOL POST FIRST AND
THEN THE ADJUSTING POST WITH COLLAR ATTACHED (PT. 3&4).
SECURE TO TOOL SLIDE WITH THE NUT AND WASHER (PT. 2).
IF
YOU ARE USING A RISER BLOCK UNDER THE CIRCULAR TOOL POST OR IF YOU ARE
USING A SOMMA DOVETAIL HOLDER FOLLOW THE SAME PROCEDURE BUT DO NOT
INSTALL THE RISER SPACER (PT. 6).
IF
YOU ARE USING A SOMMA CTP-2 CIRCULAR TOOL POST OR A SOMMA DTH2 DOVETAIL
TOOL POST ON THE NO. 2 B&S FOLLOW THE PRECEDING PROCEDURES BUT ALSO
INSTALL THE 3/16” SPACER (PT. 7) UNDER THE RISER SPACER.
INSTALLING THE SWING ARM SETTING GAGE:
FIRST
MOUNT A TOOL IN THE TOOL POST AND ADJUST IT MANUALLY TO EXACT CENTER. THE BEST WAY TO DO THIS IS TO FACE OFF THE END OF A BAR WITH
THE FORM TOOL. ADJUSTING IT
GRADUALLY UPWARD UNTIL THE FACE OF THE BAR IS PERFECTLY CLEAN, BUT BEING
CAREFUL TO MAKE SURE THAT THE TOOL IS NOT ABOVE CENTER.
NEXT
SLIP THE SWING ARM (PT. 1B) OVER THE ADJUSTING POST (PT. 3) LETTING IT
REST ON THE ADJUSTING COLLAR (PT. 4).
LOOSEN
THE SLIDING KNOB SCREW (PT. 4B) SEVERAL TURNS UNTIL THE KEY ON THE
SETTING GAGE (PT. 2B) COMES OUT OF THE KEYWAY.
THEN ROTATE THE SETTING GAGE SO THAT THE FLAT SURFACES ON THE END
FACE EITHER DOWN OR UP AS REQUIRED FOR THE DIRECTION OF THE ROTATION OF
THE PART AND THEN SNUG UP THE KNOB SCREW.
NEXT SLIDE THE SETTING GAGE BACK OR FORWARD UNTIL THE FLAT RESTS
ON THE FURTHEST EDGE OF THE TOOL THEN CLAMP SECURELY.
TIGHTEN
THE CLAMP KNOB (PT. 5B) UNTIL THE SETTING GAGE IS SNUG ON THE ADJUSTING
POST AND IN LINE WITH THE HIGH POINT OF THE FORM TOOL.
ROTATE THE ADJUSTABLE COLLAR TO RAISE OR LOWER THE SWING ARM
SETTING GAGE UNTIL THE FLAT IS JUST CONTACTING THE EDGE OF THE CUTTING
TOOL. GAGE SHOULD NOW BE SET TO CENTER.
NEXT
LOCK THE SPLIT ADJUSTABLE COLLAR SECURELY BY TIGHTENING THE SET SCREW
(PT. 5) AND REMOVE SWING ARM SETTING GAGE FROM TOOL POST.
NOTE THAT AS LONG AS THIS SETTING IS NOT DISTURBED THE SWING ARM
SETTING GAGE WILL ALWAYS BE ON CENTER WHEN IT IS PLACED ON THE POST AND
RESTS ON THE COLLAR.
TO
RESET TOOLS TO CENTER MERELY PLACE SWING ARM ON THE POST AND CLAMP IT
SECURELY BEING SURE SURFACES ARE FREE OF CHIPS.
ADJUST CUTTING TOOL UNTIL ITS EDGE JUST CONTACTS THE SETTING GAGE
AND LOCK IN PLACE. TOOL
SHOULD NOW BE ON EXACT CENTER.
WITH
ADJUSTABLE COLLAR POSTS INSTALLED ON ALL YOUR TOOL POSTS SWING ARM
SETTING GAGE CAN BE MOVED FROM MACHINE TO MACHINE.
****** WARNING
******
IMPORTANT:
FOR SAFETY REASONS SETTING GAGE MUST BE REMOVED BEFORE MACHINE IS
RESTARTED.
******
WARNING ******
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