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Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 10:19 am
by algale
As currenrly made, the mortising attachment has a hold down that secures to the 520/510 fence via a t-nut and threaded post. How did the older mortising hold down for the 500 get secured and does anyone know if it can be updated to work with the 510/520 fence?
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 10:48 am
by rjent
If I am not mistaken, there was a hole in the fence. the hold down simply dropped into the hole and was stable. My 10ER and my 500 are that way.
I'll get some pictures ....
You can see the hole in the fence in this image ...
Dick
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 1:08 pm
by JPG
Drill/tap a hole in the end of the mounting post, attach a SS t-nut with a stud. The stud needs to be bottomed out in the tapped hole(to resist backing out later), and just long enough for the t-nut to clamp to the fence slot.
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 1:36 pm
by algale
That is more or less what I was thinking, except for the detail of bottoming out the stud, which makes sense now that you mention it.
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 1:42 pm
by dusty
A comment from the 'devil's advocate.
Are the 510/520 fences stout enough to be used in this manner in lieu of the 500 fence?
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 2:05 pm
by algale
dusty wrote:A comment from the 'devil's advocate.
Are the 510/520 fences stout enough to be used in this manner in lieu of the 500 fence?
Not sure I understand the concern. No one is planning or drilling a hole in the 520 fence; just using a t-nut. This is how is is shown in the Sawdust Session.
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 2:28 pm
by dusty
I have never used a mortising attachment on the Mark V so I DO NOT speak from experience but only as a skeptic.
There have been several discussion here on the forum where complaints/concerns were voiced regarding the mortising effort. Now it sounds to me as though you might be considering putting together a modified version using the new fence and an old mortising attachment. I am skeptical. Oh, I already said that!
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 2:50 pm
by JPG
dusty wrote:I have never used a mortising attachment on the Mark V so I DO NOT speak from experience but only as a skeptic.
There have been several discussion here on the forum where complaints/concerns were voiced regarding the mortising effort. Now it sounds to me as though you might be considering putting together a modified version using the new fence and an old mortising attachment. I am skeptical. Oh, I already said that!
Now why does that not surprise me.
The suggested modification to the 500 post creates a post essentially identical to the current version from the mother ship.
The mortising concerns are relevant to the table/trunion rigidity, not the fence.
Re: Differences in Mortising Attachments 500 vs. 510/520
Posted: Fri Dec 12, 2014 4:39 pm
by anmius
algale wrote: How did the older mortising hold down for the 500 get secured and does anyone know if it can be updated to work with the 510/520 fence?
The mortising hold down for the 500 mounted by insertion into a hole on the top of the fence. It was held in place by a set screw from the side. At least that is how mine works.
