Porter Cable 4212-4215 Question

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Forum topic by ltroupe1 posted 05-26-2010 10:29 PM 3542 views 0 times favorited 6 replies Add to Favorites Watch
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49 posts in 3988 days

05-26-2010 10:29 PM

I have a Porter Cable 4212 Dovetail Jig and I have the 4215 Mini attachment.

I have read all of the instructions and watched every video I can find.

I can use the 4212 with no problem but the 4215 is giving me trouble. I called Porter Cable and they said to start my bit depth at 3/8” on the depth guide. I am still unable to get a good fitting Half Blind and Through Dovetail on the mini template.

Does anyone have the 4215 that can give me some advice? If so what did you set your depth guide to when you put it together?


6 replies so far

View a1Jim's profile


118161 posts in 4587 days

#1 posted 05-26-2010 10:50 PM

Sorry I don’t ,but dovetail jigs usally take a lot of adjustment to get them right after there set your good to go.


View ltroupe1's profile


49 posts in 3988 days

#2 posted 05-26-2010 10:56 PM

Thanks. I will just get some cheap wood and go at it. PC said just set it at 3/8” and you should be good.

View ajosephg's profile


1895 posts in 4570 days

#3 posted 05-27-2010 12:21 AM

I have this system and the presets only get you within shouting distance. I cut two extra boards that have the exact same thickness and width to do the final tweaking of bit depth as well as the stops. Cut the practice boards extra long so you can trim off the trial joints that aren’t quite right for another try.

-- Joe

View woodman71's profile


192 posts in 4333 days

#4 posted 05-30-2010 05:41 AM

Hello I have the porter cable omnijig model #7116 . I don’t know if your owners Manuel tells you what router bit to use but let say for half inch blind dove tail it will say half inch blind dove bit. But if you look close at your manual it will give a part #for a bit also from porter cable . What I have found out and what porter cable rep has fail to tell you is that if you don’t use the correct bit with the angle or degrees you can have this problem . I know your saying your nuts but I went to a woodworking show and was talking with a porter cable rep that was pretty informed at least to me and he explained this to me. He also went on to say these jigs are designed to work with a bit that has a certain degrees or angle to it. He also went on to say that you can get these jigs to work with a any bit dove tail bit in this case but you going to have work at it and in the end you will have to settle with the best fit you can get. I came home and looked at my owners Manuel and in back with part list for different jigs that you can get it also list router bits part # that goes with that jig . You could say that’s just porter cable trying to sell you bits but I can tell you I don’t think that the case I really believe that when they make these jigs they are looking at bits and there size and degrees that they make for a cut .I thought I share this with you hope I help out .

View woodman71's profile


192 posts in 4333 days

#5 posted 05-30-2010 06:13 PM

I was just looking at delta/porter cable wed site and they sell a whole set of dove tail bits. And the bits are 7 degrees . I think if you get a bit that is at 7 degrees our has the specs porter cable use with this jig you should be able get great dove tail and you might not have to go off the beaten path that in owners manual for set up. I will also say that when I can afford to spend a little more I will be buy this set or the bits that are listed in back of my owners manual. I know it sound like I might work porter cable but I don’t I think of the problem I had with my jig when I bought it and fought with it to get drove tail fit and after doing a lot home work it just came down to the dove tail bit. As far as other jig like box finger joints it probably not that important . I think just matters on dove tails I hope this has help and please let me know how it work out either way thanks.

View Panthera's profile


5 posts in 36 days

#6 posted 01-26-2021 05:45 AM

I just started playing with mine today, using the larger blind dovetails all week. I had posted in another thread, but can do it here as well.

This was with some scrap poplar, 1/2”( 7/16 actual). The bit depth was right around 5/16”. It does not leave a lot of spare on thinner pieces. As with the larger blind dovetails, and true with this, getting the template set is critical. On the full sized blinds, I had some with a gap at the bottom (but not the top) even as the joint was very tight. this was due to pushing up the template when inserting the front piece of wood, leaving a gap between the template and the horizontal face piece. On narrow pieces, have a second piece on the far side, and make sure the template is flat on the horizontal face pieces, or your depths will be a mess. Keep downward pressure on the router to make sure it stays flat. Have fun with it. As Joe mentions above, cut a few foot long scrap pieces to work the adjustments.

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