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Tool Restoration #4: ST-12H maintenance and restoration begins

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Blog entry by robscastle posted 01-01-2017 10:47 AM 596 reads 0 times favorited 4 comments Add to Favorites Watch
« Part 3: ST-12H 12" Table saw restoration Unloading Part 4 of Tool Restoration series Part 5: ST 12H Restoration Complete »

A bit of feedback on the upside down saw
1. When we removed it from the school it was test run and then disconnected from the power
2. How it got upside down, when my son and I transfered it from the trailer to the Ute we secured the motor with timber and tie down straps, as we found it was prone to tipping over as we moved it so we decided to transport it that way.
3. Yes we lowered the blade beforehand.
4. It definately needs mobiliy wheels. something to look into.
The return to servicable begins.

First up I rewired a plug on the end and test ran it again.
It worked so that was a good start, so

Rust removal on the table top was commenced.

From the looks of the top the saw had been decommissioned some time ago and then used as a glue up table

I and applied white vinegar with a cloth then scotch brite pad and went all over it.

That made a reasonable job of removing all the rust,
Then with paint scraper removed all the residue glue and crud.

With this done it was now time to do it all over again using Empire Top Saver

As the table was not co planer across the end wings I removed them to do a realignment.
I was at that time noticed the lack of leveling grub screws in the wings.
to correct the droop on each wing I cut up a piece of ice cream conainer (after disposing of the contents) and did experimental crush tests to correct the droop. If this proves not to be a long term fix I will remove both wings and fit set scews to them later.

Under Table Mechs
I checked and cleaned the under table trunnions and gear drives all looked OK with any back lash present I was able to remove with the locking knobs. The blade raised and lowered fine and then tilted to 45 degrees the same.

Considering the saws age it was showed a surprising lack of wear in the tilt and height components.

The Motor
The motor is a 3HP or 2.2kW induction type, mounting was a bit odd, it was hinge suspended and had only the motor weight to set the belt tension, a little odd maybe not too sure?

Blade Cleaning
There was a slight vibration so I suspect it would fail the coin test.
I removed the blade and removed the resin build up using carbie cleaner and then replaced the blade.
I then ran it again but there was no difference.

That was just all about I could do to the actual saw.

The Rip Fence
The rip fence leaves a little to be desired so I will attempt to find a service manual to identify what looks to be missing bolts.


General Observation:

Overall good condition considering its age
There is no provision for leveling grub screws in the wing sections
The Tee track in the table is only rectangular not the expected Tee section
Could not figure out how the blade guard fitted up
The riving knife is missing
The Rip fence “appears” to have some minor parts missing preventing fitup

Thats enough for today its hot here 34 deg C

-- Regards Robert



4 comments so far

View crowie's profile

crowie

2175 posts in 1824 days


#1 posted 01-01-2017 11:04 AM

You’ve done very well for a 34deg day in Brisbane humidity….

-- Lifes good, Enjoy each new day...... Cheers from "On Top DownUnder" Crowie

View Blackie_'s profile

Blackie_

4843 posts in 2386 days


#2 posted 01-01-2017 11:21 AM

What a great revive.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View Joe Lyddon's profile

Joe Lyddon

9979 posts in 3926 days


#3 posted 01-01-2017 06:29 PM

You’re doing a GREAT job of tackling it step by step…

I’m sure it will be a VERY GOOD saw when you’re done!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View Roger's profile

Roger

20898 posts in 2678 days


#4 posted 01-01-2017 10:38 PM

Wow! Cleaning up nicely

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. Kentuk55@yahoo.com

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