LJ Cutting Board Question

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Forum topic by PRGDesigns posted 630 days ago 1463 views 0 times favorited 13 replies Add to Favorites Watch
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203 posts in 915 days

630 days ago

Topic tags/keywords: cutting board blood groove question tip walnut maple

I have been asked to put a blood groove in one of my cutting boards. What profile router bit does anyone typically use? And how deep do you cut the blood groove with said router bit profile? Does the wood make a difference on which router bit profile you use? Thanks in advance for any consideration you can give this matter.

-- They call me Mr. Silly

13 replies so far

View waho6o9's profile (online now)


4752 posts in 1179 days

#1 posted 630 days ago

I think it’s called a cove bit and just make it pleasing to the
eye to the size of the board you make.
Mine was a 1/2 inch bit about 1/2” inch deep, but the
cutting board was a little bigger than normal.


View bondogaposis's profile


2446 posts in 953 days

#2 posted 630 days ago

Yeah, I agree a 1/2” cove bit is about right.

-- Bondo Gaposis

View Charlie's profile


1001 posts in 888 days

#3 posted 630 days ago

There’s a bit called a core box bit. I use them for making flutes. As one who USES cutting boards (I’m the cook since I retired and she’s still workin’), I’d say use a 3/4 core box bit but only take it to about 3/8 deep. Half inch is pretty deep.

What’s my suggestion do that’s different from the half by half groove? If makes for gentler sides which equates to EASIER CLEANING. See…. as the cook, I also have to clean up the prep utensils. She’ll clear the table after dinner and do the dishes, but if I make a holy mess while cooking a meal, that’s on me.

A half by half groove with sharp edges at the top would be hard for me to clean. If there’s less of an edge break it gets easier. Instead of going half by half and then breaking that edge all around, if you use a 3/4 core box at 3/8 deptch, the edge will break naturally when you machine sand the top (or hand sand if that’s what you’re in to.)

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404 - Not Found

2544 posts in 1571 days

#4 posted 630 days ago

They have different names depending on where in the world you are and who makes them, but I would call it a core box bit, as mentioned above.
Before you start routing your groove, take the time to practice on a few bits of scrap to get the bit speed right – go at it full tilt and you could end up with burn marks which are a pain to sand out.

View redryder's profile


2107 posts in 1704 days

#5 posted 629 days ago

I agree with Charlie. I used a 7/16” core box bit on my first one. As it goes thru daily use, I wish I had made it a little less deep to make cleaning easier. Start shallow. You can always make a second pass…...........................

-- mike...............

View PRGDesigns's profile


203 posts in 915 days

#6 posted 629 days ago

Thanks to everyone for their thoughts and advice. I wasn’t sure if a bowl bit or a core box bit was used more for this function. It appears the core box bit wins.

One last question – do you leave the edge left by the core box bit square or do you feather it into the board?

-- They call me Mr. Silly

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203 posts in 915 days

#7 posted 625 days ago

I decided on a circular blood groove and added this picture to my Bulge Illusion Cutting Board project post. I went with a 1/2” diameter ball nose end mill 1/4” deep. Thanks again!

-- They call me Mr. Silly

View SASmith               's profile


1547 posts in 1589 days

#8 posted 624 days ago

Great blood groove.
No burning either.
What brand of bit did you go with? How many passes?

-- Scott Smith, Southern Illinois

View Bill White's profile

Bill White

3350 posts in 2562 days

#9 posted 624 days ago

PRGdesigns, that board is a mind bender. How in the h_ didja ever come up with that idea?


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404 - Not Found

2544 posts in 1571 days

#10 posted 624 days ago

Wow, looks great

View AandCstyle's profile


1261 posts in 859 days

#11 posted 624 days ago

Mr. Silly, GREAT execution on that board. Well done! :)

-- Art

View PRGDesigns's profile


203 posts in 915 days

#12 posted 624 days ago

Thanks everyone for the complimentary comments.

Bill White – this design has been done by several LJr’s, and mine was just one iteration of the veritable design.

SASmith – 1/2” Magnate ball nose end mill – 4 passes – 1/16” per pass.

-- They call me Mr. Silly

View Ken90712's profile


14821 posts in 1791 days

#13 posted 604 days ago

I like it! well done.

-- Ken, "Everyday above ground is a good day!"

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