Maintenance and Repair

dusty · Post by **dusty** » Thu Feb 05, 2009 7:16 pm

I have a Mark V 520 and a Crafters Station that has been equipped with a ProFence.

I use them both and they seem to work equally well as a table saw. However, I recently noticed that the blade marks on stock being ripped on the two are completely different.

On the Mark V, the marks seem to be made by the blade on the infeed side while the marks on the Crafter's Station seem to be created on the outfeed side. (The arcs are reversed.)

I noticed this when I laid two pieces, that had been cut on the two saws, side by side.

I have "checked" table and fence alignment on both machines and they all seem acceptable.

Am I looking for a problem when no problem exists?

I thought there was a thread that discussed something similar to this and I thought that it was posted by either Ed in Tampa or 8iowa but I have not been able to locate it. Maybe I am imagining this.

charlese · Post by **charlese** » Thu Feb 05, 2009 7:29 pm

Lately, I've found both entry and exit marks along the entire surface of a ripped board. The marks are very slight, not at all problem to remove. I had guessed that this means the rip fence is parallel to the blade.

I think concerns over infeed or exiting marks are referring to deep marks. If your marks are like .001" deep, there is no problem.

Also I guess that these marks are often caused by a bent saw tooth.

dusty · Post by **dusty** » Thu Feb 05, 2009 7:37 pm

charlese wrote:Lately, I've found both entry and exit marks along the entire surface of a ripped board. The marks are very slight, not at all problem to remove. I had guessed that this means the rip fence is parallel to the blade.

I think concerns over infeed or exiting marks are referring to deep marks. If your marks are like .001" deep, there is no problem.

Also I guess that these marks are often caused by a bent saw tooth.

The marks are not really deep and can be removed with a very light cut on the jointer or a sanding with the conical disk but I think they are more than .001". I guess I have to pay more attention to how deep a jointer cut is required to remove them.

sandyj · Post by **sandyj** » Thu Feb 05, 2009 7:40 pm

Hi, even if the fence to blade setup is within tolerance, there is still the "tolerance factor", that is if your tolerance is say to within 5 thou, one could be biased to the infeed and the other to the outfeed side of the blade. That would produce this result (upto double the tolerance factor) - easy fix - don't mix the cuts on the two saws.

Regards
Sandy in NZ

JPG · Post by **JPG** » Fri Feb 06, 2009 2:18 am

Are you using two different tables and two different fences???? Or are you using the same fence on both tables? Or are you using the same table AND fence on two different 'carriages'(mkv/ps)?
Regardless you have a SIMILAR situation to one I have(4fences and three tables) all which CAN be used on each other.

Although my fences and tables are 500 vintage(or the old style fence on the alum bandsaw table) I can see a probable common problem.

The fence alignment procedures ASSUME a SINGLE table and adjust the fence to its miter slots(which have been previously aligned with the 'blade').

If however you have multiple tables the squareness of the front edge to the miter slots becomes relevant. If a single table is involved, the fence adjustment to the miter slots is adequate even if the front edge is NOT square to the slots.

With MORE than one table, they ALL must have the same angle between the front edge and the slots. Preferably this angle would be 90*.

I have no experience with the 510/520 table tube/extrusion setup, but I would hope it is better than the 500 extrusion. The 500/bandsaw extrusion is butted up against the front/back edge of the table and retained with 4 bolts. The extrusion has slotted holes thus allowing the extrusion to be mounted tight against the NON MACHINED front/back edge of the table. NONE of my three tables(two 500 and one bandsaw) has this edge at a 90* angle, and they vary!

The only way I could get them ALL to work interchangably was to first get the extrusion to be perpendicular to the miter slots on all three tables.

This compatibility is beyond the intent of SS designers. Had they designed for this compatibility, they would have machined a true front/back edge relative to the miter slots.

Add to this mix the variance caused by two different CARRIAGES as in your case.

Bottom line: Getting them all the same would be extremely difficult/unlikely without doing some additional machining of mating surfaces or devices!

I apologize for the length of this reply, but I do not know how to cover the relevant issues otherwise.