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Jigs and Fixtures This area will be directed towards the art of designing specific jigs and fixtures. Bob and Rick say, "if the specific operation is to make more than one piece the same size and shape then chances are you need a jig and/or fixtures."


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Old 09-21-2007, 09:34 AM   #11
bobj3
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Hi JDługosz

"How do you get stops to work with the base diagonal like that?"

See the YELLOW stop blocks in the drawing they can be used any where you need them..


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Originally Posted by JDługosz
I've seen the two-peg idea before, but using bearings is a nice improvement I've not seen. I guess to make it off-center you just position it in your holder with some shim stock. It also requires that you have a bit the correct diameter, but those details are usually arbitrary so that's not a big deal.

How do you get stops to work with the base diagonal like that?
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Old 09-24-2007, 06:48 PM   #12
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if you are in doubt of it being centered in leg stock cut tenon little oversized and sneak up on mortise I use a similar mortise jig bobj3 is talking about and really like it no problems being off centered
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Old 09-24-2007, 07:36 PM   #13
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Quote:
Originally Posted by Mike
John, when we are setting up for a mortise cut we generally mark the wood and this can be easily seen with most methods of mortising. The Oak Park design uses a 7" square mounting plate with roller bearings on the corners for stability. Rockler recently introduced a sub base plate with screw in pins to accomplish the same job. It's far cheaper but lacks the stability of the 7" plate. There is no reason why you could not install pins in your routers sub base plate to do the same job. As far as fit is concerned, the pieces should fit together well but not need to be forced. Yes, you need to allow room for glue squeeze out. If the parts are too tight and different woods were used you might face wood splitting with temperature and humidity changes.
The "sideways" pivoting mount works well. As you pivot the mounting plate up the bit raises. Once you are at the desired height you lock it in place. I think this is what has you confused: the starting and ending points will vary depending on how thick the wood is and how high the mortise is from the table sliding tray. The higher you set your bit, the closer to the pivot pin you are.

A router bit will leave a half oval end in your mortise which usually is ample room for the glue squeeze out.
I need to get a 7 inch base for this purpose. I like what I see when Bob and Rick use that method. If you did not want to put it dead center on your work piece couldn't you just add a 3/4 board or what ever on one side clamped or double sticky'd and then it would be offset?

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Old 10-16-2007, 10:41 PM   #14
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Quote:
Originally Posted by bobj3
what I see is a jig that will work with one size of stock
All I saw was the video, but the video said it is adjustable for wider stock by moving the back plate

The centering bearings and plate work well with long stock but what about when you are doing the end of a rail in a rail/ stile setup? Is it usable then or does it take a big setup to keep the router perched atop?

I like the idea of a loose tenon because it seems is much easier to get perfect. Except when cutting the rail end, where it "seems" a tenon would be easier to create.

I am currently working on a rail and stile cabinet door for glass with a profiled edge. My first attempt was TERRIBLE, but was to be expected. Do you recommend the tenon or loose tenon for this setup and how would I go about the mortise in the end of the rail?
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Old 10-16-2007, 11:12 PM   #15
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Hi petersenj20

I don't Recommend tenon or loose tenon for glass panel doors, because 1/2 of the joint is taken away by the glass..the norm.

I do Recommend R & S type doors,, you may want to get the video from sommerfeld tools, it's the best one(s) I have come across...they will show you from sq. one how to make glass panel door that will stand up to the opening and closing they all get... he has may tricks that he will show you to make them come out just right the 1st. you make them...

http://www.sommerfeldtools.com/list.asp?d=118&p=1



==============

Quote:
Originally Posted by petersenj20
All I saw was the video, but the video said it is adjustable for wider stock by moving the back plate

The centering bearings and plate work well with long stock but what about when you are doing the end of a rail in a rail/ stile setup? Is it usable then or does it take a big setup to keep the router perched atop?

I like the idea of a loose tenon because it seems is much easier to get perfect. Except when cutting the rail end, where it "seems" a tenon would be easier to create.

I am currently working on a rail and stile cabinet door for glass with a profiled edge. My first attempt was TERRIBLE, but was to be expected. Do you recommend the tenon or loose tenon for this setup and how would I go about the mortise in the end of the rail?
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Old 10-17-2007, 12:39 AM   #16
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That glass pane bit set is more than all my current router tools combined.
You got to pay to play I know. While it may not be as strong as the glass panel bit (It is a broken joint of the type I am repairing so nothing is forever especially with 2 kids) it will work and at the same time hone my budding routing skills.

I found another way to do it with an open floating tenon joint that looks pretty simple with no intricate jigs or expensive bits. This is what I will try next time.

As always I appreciate yours and everyones input.

This brings up a question. I have looked at a lot of doors and all are standard.

When you have doors that open horizontally wouldn't it make sense to have the rails run the full width instead ending between the stiles? Why wouldn't this be better? (Been meaning to ask for a while.)
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Old 10-17-2007, 08:35 AM   #17
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Quote:
Originally Posted by petersenj20
That glass pane bit set is more than all my current router tools combined.
You got to pay to play I know. While it may not be as strong as the glass panel bit (It is a broken joint of the type I am repairing so nothing is forever especially with 2 kids) it will work and at the same time hone my budding routing skills. . . .
You have already gotten some very good technical answers to your questions.
I just wanted to send some MAJOR KUDOS for your reasoning.

Fancy/expensive gadgets may (or may not) make a job easier or faster or reduce the learning curve. But they are almost never as essential as the people who market them want you to believe.
Otherwise no one would have been able to do the job before the gadget was invented.

I APPLAUD your desire to develop your skills first - then your tool collection.
That is what craftsmanship is all about.
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Old 10-17-2007, 08:57 AM   #18
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Hi petersenj20

I knew I should have said you don't need to use his bits ,you can use just about any matched set, you can get them for $25.oo or lower.

The key to get a strong joint is where the hinge will be placed, the hinge and the joint must hold the load of the full door,it comes down to how much glue you can get in the joint or to say the joint area..and the right angle of the joint comes into play also.

Many cabinet doors are made with a shaper that's because the cutters on shaper cut 1/2" deep unlike most router bits only go 3/8" to 7/16" deep the norm...the deeper the slot the stronger the joint.

http://cgi.ebay.com/2-pc-1-4-SH-Ogee...QQcmdZViewItem
http://cgi.ebay.com/2pc-1-2-SH-Doubl...QQcmdZViewItem

http://stores.ebay.com/Super-Carbide-Tools

Just a note about Glass type cabinet doors,,, Once you have the door parts glued up use the rabbit bit to remove the inside lip for the glass,,,then sq. the corners out with a chisel or a corner tool like the one below...


===============

Quote:
Originally Posted by petersenj20
That glass pane bit set is more than all my current router tools combined.
You got to pay to play I know. While it may not be as strong as the glass panel bit (It is a broken joint of the type I am repairing so nothing is forever especially with 2 kids) it will work and at the same time hone my budding routing skills.

I found another way to do it with an open floating tenon joint that looks pretty simple with no intricate jigs or expensive bits. This is what I will try next time.

As always I appreciate yours and everyones input.

This brings up a question. I have looked at a lot of doors and all are standard.

When you have doors that open horizontally wouldn't it make sense to have the rails run the full width instead ending between the stiles? Why wouldn't this be better? (Been meaning to ask for a while.)
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Machine Cut ▼
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Last edited by bobj3; 10-17-2007 at 11:04 AM.
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Old 10-17-2007, 11:10 AM   #19
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Quote:
Originally Posted by petersenj20
. . .
When you have doors that open horizontally wouldn't it make sense to have the rails run the full width instead ending between the stiles? Why wouldn't this be better? (Been meaning to ask for a while.)
Now THAT is a good trivia question-
I'm sure there are a variety of answers.
If it's another slow day -- I think I'll research it.

On the practical side -
I avoid that question altogether.
I usually join rails and stiles with either lap joints or full tenons.
That way both the rail and the stile go the full width/length of the door and you get maximum gluing surface.
I saw this on some antique cabinets once and it made sense.

Plus I liked that it was something I could do without any specialized tools - just a router or a saw. I cut any grooves or rabbets I needed for the panels as well as any shaping I wanted to do on the front before making the joint.
Or - I added it as molding afterward.

BJ -
Thanks for the link to the less expensive sets.
I have been thinking about buying some -- and at that price I can almost justify it.
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Old 10-17-2007, 11:31 AM   #20
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Hi Cowboy

You'er Welcome

I have both types the CMT and the eBay ones, they both work very well and do a great job, the eBay ones are a bit harder to setup and use BUT they work ,,,and for the price they are hard to beat...and as you know you can drop tons of money into router bits and this is jiust one way around that...

I just got a email from Price Cutters and they also have them on sale but not a low as the eBay ones.

Talking about the eBay ones, I just order a new set and I forgot I had one in my shop ,duh, the set was a dovetail bit set ...the price was so good I jumped on it again...that's what old guys do they forget things now and then.. but you can't have to many router bits LOL it was only 54.oo bucks for a full set..of 16 pcs. I think they call that a CRS error..



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