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Routing rabbets - How much material can I remove in one pass.

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Forum topic by ScaryDull posted 09-27-2017 09:22 PM 654 views 0 times favorited 11 replies Add to Favorites Watch
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ScaryDull

8 posts in 1161 days


09-27-2017 09:22 PM

Topic tags/keywords: missing finger kickback not a fan of multiple passes router

Hi there

I am building some big sliding barn doors for a closet – they are each 8ft.x6ft.4” and they consist of a frame joined with large dominos and some ship lapped wood inset in a rabbet routed to the back of the frame- the rabbet is going to be 3/4”x3/4”.
I live in Europe (where we don’t have dado-blades – because of safety – as is this is safer…) so I instead have a large Whiteside straight router bit (2 inches in diameter) in a large and stable router table with a large and strong fence + feather boards.
Can I route the 3/4”x3/4” rabbet safely in one pass?
The frame is made in Douglas fir and the material is 8”X1 3/4”

Best regards
Peter


11 replies so far

View jerryminer's profile

jerryminer

811 posts in 1280 days


#1 posted 09-27-2017 09:58 PM

I think a 3/4×3/4 rabbet is too much for a router in a single pass. I would take at least three passes

-- Jerry, making sawdust professionally since 1976

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Loren

9633 posts in 3487 days


#2 posted 09-27-2017 10:03 PM

I wouldn’t do it in one pass. Even if the
motor can do it, there’s a lot of chips to
clear with that much material being removed.

I’ve never pushed a big 3hp router to its
limit so I can’t say for certain it can’t be done.
I did however burn out a 1.5hp router taking
too deep a cut in end grain oak.

View Rich's profile

Rich

1984 posts in 428 days


#3 posted 09-27-2017 10:18 PM

With a 2 inch diameter bit, you should have no problem removing that much material in one pass. However, depending on the grain and how sharp your bit is, you’ll risk tearout even with multiple passes. Check out Charles Neil’s new video on bump cutting with the router. I used it with a flush cutting bit on a curved template, and even the cuts up the grain were clean. No tearout.

https://www.youtube.com/watch?v=hUXVsNv_PBQ

-- No matter how much you push the envelope, it'll still be stationery.

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a1Jim

116588 posts in 3416 days


#4 posted 09-27-2017 10:19 PM

Hi Peter
I agree with Jerry and Loren use 2 if not 3 passes it usually makes a cleaner cut and less chance of tear out depending on the wood. Plus the wear and tear on your router as Loren pointed out. Here’s something to help avoid tear out since you’re using Doug fir.

https://www.youtube.com/watch?v=hUXVsNv_PBQ&t=30s

-- http://artisticwoodstudio.com Custom furniture

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Rich

1984 posts in 428 days


#5 posted 09-27-2017 10:49 PM


https://www.youtube.com/watch?v=hUXVsNv_PBQ&t=30s

- a1Jim

lol… That’s the same video I posted a link to above. Beat you by one minute, though! Watch out for the t=30s that’s in your link. That skips 30 seconds into the video, and you miss some of Charles’ awesomeness.

-- No matter how much you push the envelope, it'll still be stationery.

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a1Jim

116588 posts in 3416 days


#6 posted 09-27-2017 10:54 PM

Ha Ha typing too slow I guess Rich:))

-- http://artisticwoodstudio.com Custom furniture

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ScaryDull

8 posts in 1161 days


#7 posted 09-28-2017 11:51 AM

Thanks for the help.

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theart

14 posts in 393 days


#8 posted 09-28-2017 02:00 PM

That’s a big rabbet. The least messy way to do it would be two right angle passes on the table saw with a regular blade. Maybe cut it a little small on the saw and use a pass with the router to clean it up.

View ArtMann's profile

ArtMann

688 posts in 655 days


#9 posted 09-29-2017 03:08 AM

So much for the more stringent European woodworking safety standards! What you are trying to do is much less safe than using a dado blade in my opinion. Just be careful.

View ScaryDull's profile

ScaryDull

8 posts in 1161 days


#10 posted 09-29-2017 10:45 AM



So much for the more stringent European woodworking safety standards! What you are trying to do is much less safe than using a dado blade in my opinion. Just be careful.

- ArtMann

I agree- and thank you – I will be.

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ScaryDull

8 posts in 1161 days


#11 posted 09-29-2017 10:47 AM



With a 2 inch diameter bit, you should have no problem removing that much material in one pass. However, depending on the grain and how sharp your bit is, you ll risk tearout even with multiple passes. Check out Charles Neil s new video on bump cutting with the router. I used it with a flush cutting bit on a curved template, and even the cuts up the grain were clean. No tearout.

https://www.youtube.com/watch?v=hUXVsNv_PBQ

- Rich


Thanks for the tip- it’s a new and unused bit.

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