Repair thread - Hafco ST-12 circa 2003
Hey all,
I picked up a Hafco ST-12 on the marketplace here from a local. Had some known issues and this is a thread about getting to the bottom of some of them.
What I can confirm from the poring over parts images is that this saw is NOT the same as the current model that it closely resembles, the SB-12. The internals look almost exactly like the current ST-12D, so I think that the ST-12D is the evolution of the unit I have - it's now got a full shell not just a "contractor" stand like mine has, and the motor is mounted underneath the arbor not behind the saw, but the rest of the guts of mine look more like the ST-12D than the SB-12 even though the form factor is the same as the SB-12.
What I also believe is that this is one of the generic Taiwanese units that were sold with many different badges on from many different vendors. The Baker 305mm saw discussed in another recent thread, and Aldav's "Jonesway" one, both look pretty identical except for colour. I've also seen ads for older Toolmac and other brands that all look identical.
The first problem to deal with is the saw won't return to true 90* from the table. I've been over the saw and the first issue I have noted is some missing grub screws, and I believe they're contributing to the 90* problem. So you'd think a grub screw right, shouldn't be hard to replace should it? Well, either did I to start. They are M6, 1.25 pitch.
Normal M6 screws are 1.00 pitch, so these seem to be "unique". Anyone have suggestions where I might get some?
Fallback: I'm contemplating drilling out and tapping to M8 as at least I can get M8 1.25 pitch at big green shed (in packs of 2, with 10 free other size/lengths I don't need).
I'll post up some pics tomorrow showing some of the current fixes applied and some other questions
@Aldav can I ask you to confirm if your height raise/lower