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Old 02-19-2016, 05:43 AM
  #109  
OurWorkbench
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ASSEMBLING THE WORKSTAND

I recently had the workstand disassembled and since this doesn't happen very often, I thought I'd post pictures of its re-assembly. A few people have had questions about disassembly and reassembly. I think this will help.

The process is started by positioning the center cross member of the base, along with one foot piece and one vertical support arm, as shown in the picture below.

The center cross-member is labeled to distinguish front from back.

The foot pieces have been labeled on their underside "LF" (for left front) and "RF" for right front. The support arms can be distinguished from one another by the hole for the lock pin, present in the left support arm only. Left inside and right inside are labeled, since both arms are symmetrically shaped.

(Support Base Right Side)
[ATTACH=CONFIG]543003[/ATTACH]


The two lag screws hold the three pieces together. Insert the lag screws, first through the vertical support arm, then through the foot piece, finally aligning them into the threaded holes in the end of the cross member, as shown.

(Lag Bolts Inserted)
[ATTACH=CONFIG]543004[/ATTACH]

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TIP: There is a trick for getting screw threads started properly. Push the screw gently into the hole with the receiving threads. Using gentle pressure on the screw, slowly rotate the screw in the reverse direction (CCW). Within about one turn, you should feel the screw drop down one thread. As soon as the screw drops down to the next thread, it is positioned perfectly to follow the existing threads without damage from cross-threading. Then proceed to turn the screw normally (CW). This will work for any threaded fastener.
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A socket wrench works well, since the heads of the lag screws are recessed. Screw the lags in almost all the way, but not tight yet.

A space underneath the cross member is normal. This helps to avoid high-centering ir rocking of the stand on surfaces that mey not be perfectly flat.

(Lag Screws Not Tight)
[ATTACH=CONFIG]543005[/ATTACH]

Using a square of some kind, check that the support arm is square (90 degrees) BOTH front-to-back as well as in and out. The inward or outward tilt of the vertical support arm may be found to be out of square, as shown below.

(Support Arm Not Square)
[ATTACH=CONFIG]543006[/ATTACH]

By adjusting the tightness of the lag screws, the arm may be tilted in or out. This is described and illustrated earlier in this thread, in the section about the makng of the workstand base. The illustrations are the fourth and fifth pictures in the post. A link to the post is here.

http://www.quiltingboard.com/vintage...ml#post7234164

Using a square, adjust the position of the arms. Loosen one screw and tighten the other to tip the arm inward. Do the opposite to tip the arm outward. When in the correct position, tighten the screws, alternating a little at a time, until tight. Only tight enough to hold securely. Over-tightening will harm the threads.

This adjustment is intended to make the vertical supports the correct distance apart at the top, to accept the swing frame pivots.

(Support Arm Square)
[ATTACH=CONFIG]543007[/ATTACH]

Repeat the same steps for the other end of the support base. When the other end has been completed, the base is fully assembled.

(continued in following post)
Attached Thumbnails supportbaseright.jpg   lagboltsinserted.jpg   lagscrewsnottight.jpg   supportarmnotsquare.jpg   supportarmsquare.jpg  

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