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Cabinet making question

Posted on 12/16/23 at 3:11 pm
Posted by Liger43
Hammond
Member since Sep 2019
507 posts
Posted on 12/16/23 at 3:11 pm
I do carpentry work and I’ve been picking up more cabinet jobs. I’m currently making basic tongue and groove shaker style cabinet. When I’m making the grooves it tends to blow out the wood at the end every time. What is the cause of this. Is it that the router bit isn’t sharp enough? I am just trying to figure it out because i’m very meticulous about my work and it takes to much time fixing it on each door. Any feedback helps.
Posted by Obtuse1
Westside Bodymore Yo
Member since Sep 2016
25604 posts
Posted on 12/16/23 at 3:16 pm to
The answer is to use a shaper and feeder so you can climb cut.

ETA: are you talking a full depth pass? If so try milling in 2 or 3 passes to get to the desired depth
This post was edited on 12/16/23 at 3:24 pm
Posted by Cuz413
Member since Nov 2007
7270 posts
Posted on 12/16/23 at 3:20 pm to
The easy answer is to clamp a piece of scrap wood to your project to keep the bit from tearing out your work piece.
Posted by LegendInMyMind
Member since Apr 2019
53854 posts
Posted on 12/16/23 at 3:24 pm to
Are you using a sacrificial backer board when you push the board through the profile bit? If not, that will solve your issue.

ETA: On the backside of your finished piece. It supports the wood fibers when the profile bit passes out of the material.
This post was edited on 12/16/23 at 3:32 pm
Posted by Liger43
Hammond
Member since Sep 2019
507 posts
Posted on 12/16/23 at 3:41 pm to
Thanks fellas! Very useful tips.
Posted by deltaland
Member since Mar 2011
90556 posts
Posted on 12/16/23 at 4:26 pm to
quote:

Cabinet making question


You running for President?
Posted by kengel2
Team Gun
Member since Mar 2004
30742 posts
Posted on 12/16/23 at 4:46 pm to
Clamp a sacrificial piece or just leave it long and cut it to length after.
Posted by latech15
Member since Aug 2015
1169 posts
Posted on 12/16/23 at 4:58 pm to
Just butt joint it and use drywall screws. That way if it loosens up over time you can just tighten it back up.
Posted by soccerfüt
Location: A Series of Tubes
Member since May 2013
65597 posts
Posted on 12/16/23 at 5:34 pm to
Use stainless instead of wood.

Duh.
Posted by idlewatcher
County Jail
Member since Jan 2012
79028 posts
Posted on 12/16/23 at 5:41 pm to
quote:

The easy answer is to clamp a piece of scrap wood to your project to keep the bit from tearing out your work piece.


This is the correct answer

Signed,
Weekend Cabinet Maker
Posted by TigerFanatic99
South Bend, Indiana
Member since Jan 2007
27534 posts
Posted on 12/16/23 at 5:43 pm to
quote:

The easy answer is to clamp a piece of scrap wood to your project to keep the bit from tearing out your work piece.



I'm not a carpenter, but I am obese and watch a cubic shitton of YouTube.

This guy's answer is the way.
This post was edited on 12/16/23 at 5:45 pm
Posted by Obtuse1
Westside Bodymore Yo
Member since Sep 2016
25604 posts
Posted on 12/16/23 at 6:07 pm to
quote:

This is the correct answer


How do you clamp anything on the sticking cut? You could do it on the coping cut and your coping sled should be set up with a clamp and sacrificial backer. On the sticking cut you can use a piece of wood as a push stick/backer.

I still say if you are going to do any significant number of cabinet doors and drawer fronts invest in a shaper, feeder, and good tooling. Get the right number of knife marks per inch using spindle speed and feed rate and you won't have tearout especially if you climb cut.
Posted by poochie
Houma, la
Member since Apr 2007
6208 posts
Posted on 12/16/23 at 6:10 pm to
Sacrificial backer. Or I’ve seen bulk makers make them bigger then cut them down to size.
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