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Rich Engelhardt
06-20-2019, 3:43 PM
I was routing a grove in some plywood for a drawer bottom.
It was tearing out something fierce.
I decided to try a climb cut - which I've done before with good results- - only - -on a much larger piece of plywood.

This went real well with the small 6 x 4 inch test piece I ran.

Things got real exciting real quick when I ran the 4" x 13" drawer front however......

My wife was painting in the living room when the drawer front sailed past her doing about 350 mph :eek: :eek: :o (thankfully she wasn't in the path of the flying piece of drawer.

Lesson learned......climb cuts are now something I'll only try again on much larger pieces....

Brian Holcombe
06-20-2019, 3:45 PM
Size of the piece and size of the cut both matter a lot on climb cuts. Piece big, cut small.

Clark Hussey
06-20-2019, 4:24 PM
I’m glad everyone is okay. That must have been a holy moment

George Bokros
06-20-2019, 5:01 PM
Glad your wife wasn't in the path of the errant projectile.

Patrick Kane
06-20-2019, 5:11 PM
I remember one of the first times i used a router table resulted in something similar. I wasnt climb cutting, but i was making a dado that was maybe 5/8-3/4" with a half inch bit on the second pass. The work piece can come off the machine at an impressive clip. It certainly left an impression on my memory. Not that this is proper technique--or maybe it is--but strength will overcome a router kickback. If you can affix your workpiece in a clamping jig with a good handhold on it, climb cuts shouldnt get away from you and become airborne.

In any case, its a good lesson to learn so long as no one gets hurt!

John TenEyck
06-20-2019, 8:41 PM
No drama if you clamp the workpiece.

Lee Schierer
06-20-2019, 8:52 PM
No drama if you clamp the workpiece.

For smaller pieces you can attach them to something larger with double sided tape. It prevents launching and protects fingers.

You also need to use a fence when possible to minimize the depth of cut.

Rod Sheridan
06-20-2019, 9:22 PM
I was routing a grove in some plywood for a drawer bottom.
It was tearing out something fierce.
I decided to try a climb cut - which I've done before with good results- - only - -on a much larger piece of plywood.

This went real well with the small 6 x 4 inch test piece I ran.

Things got real exciting real quick when I ran the 4" x 13" drawer front however......

My wife was painting in the living room when the drawer front sailed past her doing about 350 mph :eek: :eek: :o (thankfully she wasn't in the path of the flying piece of drawer.

Lesson learned......climb cuts are now something I'll only try again on much larger pieces....

Glad there were no injuries, climb cutting should only be performed with a stock feeder.....Rod

Mike Kees
06-21-2019, 1:16 AM
I agree with Rod.

Kevin Jenness
06-21-2019, 3:43 AM
You can suppress tearout by pre-scoring with a marking or mortise gauge.

Rich Engelhardt
06-21-2019, 9:17 AM
:( Wish I'd known that before yesterday.
Oh well, I still have one more drawer to make for the current project and a couple/three to make for my sister on law's kitchen.
Thanks for the tip!

Andrew Seemann
06-21-2019, 12:31 PM
I only climb cut small chamfers and roundovers, at least they are the only ones I do intentionally. Sometimes I get confused on cutter rotation and direction on large pieces with lots of direction changes and have occasionally done accidental climb cuts in regular routing. Quite terrifying.

At the University, some of the shops I worked in had big signs next to the milling machines saying "NO CLIMB MILLING"

Tom Trees
06-21-2019, 11:07 PM
Does an dual rotational router, and cutters exist for this application?
Something handheld or for a lightweight router table, rather than a spindle moulder.

Ralph Okonieski
06-22-2019, 7:24 PM
Scary situation when it happens. Glad no one was injured.