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Preventing Chipout


 

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This is just a shelf that goes on top of friends dog crate. I chamfered with Felder 150 mm shear rebate head at 45 deg and got a chip out in one spot. In this particular case, the shelf was elevated by a piece of plywood so the wood was backed up even though there is a gap in the table around the cutter.

Is there a way to minimize chances of this happening, like putting a tape on the surface being milled? I know it is risky to do it on the end grain. Perhaps, I should have done it in couple of passes.

image0.jpeg

Imran Malik


 

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Tablesaw blade tilted at 45?. The downcut of the blade would have prevented the chip out.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 4, 2024, at 12:57?PM, imranindiana <imranindiana@...> wrote:

This is just a shelf that goes on top of friends dog crate. I chamfered with Felder 150 mm shear rebate head at 45 deg and got a chip out in one spot. In this particular case, the shelf was elevated by a piece of plywood so the wood was backed up even though there is a gap in the table around the cutter.

Is there a way to minimize chances of this happening, like putting a tape on the surface being milled? I know it is risky to do it on the end grain. Perhaps, I should have done it in couple of passes.

<image0.jpeg>

Imran Malik


 

Thats such a shallow cut, I would also have also done it in one pass. On end grain if you have a power feeder, doing a climb cut can help, but not something I would recommend without a PF or doing on a CNC.

Regards
Karl


 

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Good point Brian. Since this was done upside down on shaper, the shear action was in opposite direction than being helpful.

Imran Malik

On Jan 4, 2024, at 3:03 PM, Brian Lamb <blamb11@...> wrote:

?Tablesaw blade tilted at 45?. The downcut of the blade would have prevented the chip out.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 4, 2024, at 12:57?PM, imranindiana <imranindiana@...> wrote:

This is just a shelf that goes on top of friends dog crate. I chamfered with Felder 150 mm shear rebate head at 45 deg and got a chip out in one spot. In this particular case, the shelf was elevated by a piece of plywood so the wood was backed up even though there is a gap in the table around the cutter.

Is there a way to minimize chances of this happening, like putting a tape on the surface being milled? I know it is risky to do it on the end grain. Perhaps, I should have done it in couple of passes.

<image0.jpeg>

Imran Malik


 

开云体育

I do a lot of chamfers like that in chip out prone material and have found saw blades coming down across the material to be the safest way.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 4, 2024, at 1:12?PM, imranindiana <imranindiana@...> wrote:

Good point Brian. Since this was done upside down on shaper, the shear action was in opposite direction than being helpful.

Imran Malik

On Jan 4, 2024, at 3:03 PM, Brian Lamb <blamb11@...> wrote:

?Tablesaw blade tilted at 45?. The downcut of the blade would have prevented the chip out.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 4, 2024, at 12:57?PM, imranindiana <imranindiana@...> wrote:

This is just a shelf that goes on top of friends dog crate. I chamfered with Felder 150 mm shear rebate head at 45 deg and got a chip out in one spot. In this particular case, the shelf was elevated by a piece of plywood so the wood was backed up even though there is a gap in the table around the cutter.

Is there a way to minimize chances of this happening, like putting a tape on the surface being milled? I know it is risky to do it on the end grain. Perhaps, I should have done it in couple of passes.

<image0.jpeg>

Imran Malik



 

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This would be easy enough to do by tilting the blade on your slider and bringing your rip fence in as a stop with fence pulled back just before the blade. I cut all my 45s that way on the slider.?

On Jan 4, 2024, at 3:30 PM, Brian Lamb <blamb11@...> wrote:

?I do a lot of chamfers like that in chip out prone material and have found saw blades coming down across the material to be the safest way.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 4, 2024, at 1:12?PM, imranindiana <imranindiana@...> wrote:

Good point Brian. Since this was done upside down on shaper, the shear action was in opposite direction than being helpful.

Imran Malik

On Jan 4, 2024, at 3:03 PM, Brian Lamb <blamb11@...> wrote:

?Tablesaw blade tilted at 45?. The downcut of the blade would have prevented the chip out.

Brian Lamb
blamb11@...
www.lambtoolworks.com




On Jan 4, 2024, at 12:57?PM, imranindiana <imranindiana@...> wrote:

This is just a shelf that goes on top of friends dog crate. I chamfered with Felder 150 mm shear rebate head at 45 deg and got a chip out in one spot. In this particular case, the shelf was elevated by a piece of plywood so the wood was backed up even though there is a gap in the table around the cutter.

Is there a way to minimize chances of this happening, like putting a tape on the surface being milled? I know it is risky to do it on the end grain. Perhaps, I should have done it in couple of passes.

<image0.jpeg>

Imran Malik



 

Imran,

Both Brian and Dan gave you approaches that work well and are simple to implement.

For my part, I always like to complicate things a bit ?:

I have cut chamfers on my spindle using a single blade from my dado set, angled to the desired slope. I was already setup to cut corner splines on a small box so this was an easy task to perform. The piece was sitting on the slider. Proper safety guards in place and the fence on the shaper hood acted as the stop. It worked very well and saved me from having to switch functions on my B3.

Regards,

Jacques


 

I would do that with my block plane or Mirka sander.?

Jason Holtz
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406
612.432.2765

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Jason
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406