Miter Set Gauge Jig - Router Forums
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post #1 of 18 (permalink) Old 08-21-2017, 08:44 PM Thread Starter
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Default Miter Set Gauge Jig

I have been meaning to order these jigs for a while now, and Harry's post http://www.routerforums.com/lobby/11...ees-knees.html
motivated me to get it done. They arrived last Friday and today I thought I would spend some time with jigs. They are obviously well made, fit and finish is close to perfect. And there is the rub.
This is in no way a criticism of these jigs!

My table saw is a Grizzly G0690, and the miter gauge I use is the Osborne EB3. I have the Osborne set so there is no slop in the miter groove and it gives me great results. But the miter bar will not fit in the Miter Set's groove. Using my calipers, the Miter Set groove is .7505 and my miter gauge bar is .7565. I can change the miter bar to fit the jig, but then I loose the fit in the table saw, and visa versa if I mess with the jig. Even if I decided to dedicate a different miter gauge to the jig I would probably run into the same issue. I know .006 is not that great, but when I am cutting segments it is going to show up. I am going to have to think about this, and I am open to any suggestions.
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post #2 of 18 (permalink) Old 08-21-2017, 10:41 PM
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I discovered my cheapie miter gauge is also sloppy, but it is pretty loose in the miter slot on the saw and the jig. So, I ordered an Incra MITERV27 without the fence for now. Hopefully I can get it to work.

I had a problem some time ago with a poor fit on a miter bar on a jig, which I fixed with aluminum duct tape, used as a shim on the side of the bar. One layer seemed to do it. .0060 is more error that is workable for something with 7-8 miter joints. The whole point is being exact and minimizing the problems of assembly.

Since the jig is closeer to .7500 than the saw slot, I'd try to work out a way to fit to the jig. Try the aluminum tape, but be very careful to get it perfectly flat. At least it will come off (leave a little tab on the ends for removal). I don't have anything precise enough to check the thickness of the tape, but if you do, kindly let us know--maybe a before/after. It will go in the slot, not on the gauge.

Changing the width of the Griz's miter slot on either side should provide the precision you need. It is all about getting the miter slot parallel to the blade, the distance from the blade isn't a factor.
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Last edited by DesertRatTom; 08-21-2017 at 10:44 PM.
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post #3 of 18 (permalink) Old 08-22-2017, 09:15 PM Thread Starter
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I decided to see what happened with an old, very sloppy miter gauge. I used the segment jig and set it up for 6 segments. It was sloppy in both the jig and saw. It worked pretty well, there were some small gaps that I could close with finger pressure that should close up with a proper clamp. I think I am going to set-up a miter gauge just for this jig. I am back to being happy, What looks like gaps in the picture are actually differences in height, I had "issues" with the tape.
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post #4 of 18 (permalink) Old 08-22-2017, 10:00 PM
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I posted about this being a problem in Harry's post. I have not bought one of these jigs yet.

Don in Murfreesboro,Tn.

Measure once cut twice and it's still to short.
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post #5 of 18 (permalink) Old 08-22-2017, 10:18 PM
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Warped frame stock will do that too. Hard to correct for that. You can cut a circular sheet of ply that fits inside the lower part of the frame, then clamp it down hard to force the pieces into alignment, but that only works for a small deviation. The fit is pretty good. I often use a little filler Timber Mate, Amazon) to cover the small gaps and misalignments. It sands nicely and takes a stain pretty much the same as your frame material. Sanding the odd contours on frame material was a pain until I got the shaped sanding blocks shown. Using the flexible sanding medium from 3-M with these blocks, sanding is easy and done quickly. I got them from Rockler for a few bucks, but they're also on Amazon.

My new Incra miter gauge arrives tomorrow so I'll report on how it fits on my Laguna saw and the jig. From your post, it seems that if I can get it fairly tight on both miter slots, it will work out well. I think you're right about a proper clamp making a big difference.
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post #6 of 18 (permalink) Old 08-23-2017, 12:47 AM
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Good points as always.

I ordered one of these and through a company error received a double shipment ( the 2nd is being returned) Unfortunately, I don't own a set of calipers that are accurate enough to comment on the width of the groove in either set.

I have 2 miter gauges, 1 KREG with no identifiable part number to reference and an INCRA V120. Both fit slightly loose in the groove on the miter set but fit well in grooves on my JET table saw. Interestingly, the KREG has a "button" (for lack of a better word) on the end that rides in the base grove on the JET. That button will not fit through the groove on the miter set. Similarly, the INCRA has a blade on the end that rides in the base grove on the JET and it will not fit in the miter set either. Both miters have adjustable spacers to tighten the fit in the miter grove so I'm not concerned about any slack there.

Hopefully I can get some shop time to check these further in the near term.

Jon
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post #7 of 18 (permalink) Old 08-23-2017, 07:09 AM
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My Shopsmiths have non-standard miter slots. When Kreg first offered their miter gauge, they were kind enough to machine their runner for an exact fit. Then, when I learned about this new start up called Miterset, I called the inventor and manufacturer and he made a set for me specifically for the Shopsmith. At that time, Mitersets were being produced in a garage workshop and were made with BB. I take great care with them.
The Kreg has always been very accurate as verified by the Miterset. And, I've made several multi sided projects with the team. No fine tuning was ever needed.
I've also used the team to make MDF set up "templates" for my SCMS to make bevel cuts for multi sided boxes. Also, no tuning needed.
I hope Bob is able to make his miter gauge and Miterset play well together. As, this setup has taken my precision cuts so much easier.
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post #8 of 18 (permalink) Old 08-23-2017, 07:59 AM Thread Starter
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Quote:
Originally Posted by Gene Howe View Post
My Shopsmiths have non-standard miter slots. When Kreg first offered their miter gauge, they were kind enough to machine their runner for an exact fit. Then, when I learned about this new start up called Miterset, I called the inventor and manufacturer and he made a set for me specifically for the Shopsmith. At that time, Mitersets were being produced in a garage workshop and were made with BB. I take great care with them.
The Kreg has always been very accurate as verified by the Miterset. And, I've made several multi sided projects with the team. No fine tuning was ever needed.
I've also used the team to make MDF set up "templates" for my SCMS to make bevel cuts for multi sided boxes. Also, no tuning needed.
I hope Bob is able to make his miter gauge and Miterset play well together. As, this setup has taken my precision cuts so much easier.
Gene, great information, thank you. I am going to dedicate a miter gauge to these jigs, and I am sure that end result will be more than adequate. I would really like to see pictures of your templates for you SCMS.
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post #9 of 18 (permalink) Old 08-23-2017, 08:37 AM
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Although it's a little aggravating to set up initially, the new MLCS band clamp with "adjustable" corners works very well for clamping multi-sided frames. It comes with four corners, but additional sets can be purchased. It came in handy when I was making production lots (four at a time) of my turtle planter - after being set to the correct size, it was relatively easy to remove and move to the next frame.

I've also had good luck with the spring clamps https://www.amazon.com/Collins-Miter...89GR5F2FH98FW8 the set I have has a variety of sizes, and comes in handy gluing returns on trim and so forth.
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post #10 of 18 (permalink) Old 08-23-2017, 10:52 AM
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Quote:
Originally Posted by Bob Adams View Post
I have been meaning to order these jigs for a while now, and Harry's post http://www.routerforums.com/lobby/11...ees-knees.html
motivated me to get it done. They arrived last Friday and today I thought I would spend some time with jigs. They are obviously well made, fit and finish is close to perfect. And there is the rub.
This is in no way a criticism of these jigs!

My table saw is a Grizzly G0690, and the miter gauge I use is the Osborne EB3. I have the Osborne set so there is no slop in the miter groove and it gives me great results. But the miter bar will not fit in the Miter Set's groove. Using my calipers, the Miter Set groove is .7505 and my miter gauge bar is .7565. I can change the miter bar to fit the jig, but then I loose the fit in the table saw, and visa versa if I mess with the jig. Even if I decided to dedicate a different miter gauge to the jig I would probably run into the same issue. I know .006 is not that great, but when I am cutting segments it is going to show up. I am going to have to think about this, and I am open to any suggestions.
Wont this post help?

http://www.routerforums.com/lobby/11...ml#post1608226

Harry



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