Instructables
Finding ways to use up scrap wood in the shop is always a fun challenge.  This scrap wood cutting board is a great project because it's made from a wide variety of different kinds of wood that are all a bunch of different sizes - which is to say, it can be made with virtually whatever you've got lying around.  The multicolored boards work and look great in the kitchen, but the basic process of making the stripped stock material can be applied to virtually any woodworking project for a colorful outcome.  The key elements to this project are using a good waterproof, kitchen friendly glue, like Elmer's® Carpenter's® Wood Glue MAX, and adding in a few bold and colorful woods like purple heart (purple) and paduck (red) to really make the boards pop with color.

 
Remove these adsRemove these ads by Signing Up

Step 1: Tools and materials

Picture of Tools and materials
cuttingboard2.jpg
I'm a bit of a hoarder when it comes to materials and supplies, so it's no surprise that my wood shop is filled with a lot of cut-offs that perhaps other people might just throw away.  It turns out that all these odds and ends actually have some real value for making small projects like jewelry boxes, thin strips for inlays, or joined together to form larger boards.  This Instructable shows you how to join multiple different sized boards together to make a scrap wood cutting board.  Here's what you'll need:

Tools:
  • table saw
  • jointer
  • planer
  • router with round over bit and round nose groove bit
  • router table
  • clamps
  • cauls
  • glue brushes
  • palm sander

Materials:
  • various scrap pieces of wood (read below for explanation)
  • Elmer's® Carpenter's® Wood Glue MAX
  • food safe finish such as mineral oil or butchers block oil and rags

The woods that I chose to use were basically just what I had lying around from other projects.  The cutting board contains maple, walnut, mahogany, paduck, purple heart, cherry and sapele.  I've found that one wood to stay away from using in a cutting board is a deep grained oak - the pits allow for food to build up and they are harder to clean.  How much wood you need will depend upon the size of cutting board that you're making.  I always think that it's a good idea to prepare more wood than you think you'll need because sometimes there are sections of scrap material with knots or blemishes that end up not being suitable for a project.

To be perfectly clear, when I say "scrap wood" I mean scrap hard-woods.  And at no point should you attempt to make a cutting board out of a composite material like plywood or MDF, or out of any lumber that's been treated in any way, like pressure treated lumber.

Step 2: Joint an edge

Picture of Joint an edge
cuttingboard6.jpg
cuttingboard7.jpg
If your scrap wood is already dimensioned, skip this step.  If it's got rough edges or faces from the mill, you'll need to joint and plane them first.  

Use a jointer to prepare one edge.  This creates a straight edge which you can use later to push against the table saw fence to make a straight cut.  It is generally the first step that is done with any raw lumber.

If you have a face that needs to be cleaned up, run the face of the board over the jointer as well.  If your board face is wider than your jointer bed, you can cut it into a smaller piece (remember, you've now got at least one straight edge to cut against), or, use a variety of tricks by making a sled for your planer to hold the wood as it runs through directions for which can easily be found online.

Do this for all of your scrap pieces.  At the end, they should all have at least one clean edge and at least one clean face.

Step 3: Plane the face

Picture of Plane the face
cuttingboard11.jpg
cuttingboard12.jpg
cuttingboard9.jpg
cuttingboard13.jpg
Next, take the already dimensioned face and place it face down onto your planer bed.  Run the piece of wood through your planer.  Do this with all of your boards that you are using, even if it already has two smooth faces.  This will make all of your wood the same thickness.  I try to keep my cutting boards as thick as possible so they have heft, and resist warping from exposure to moisture.  

With that in mind, plane your scrap wood as little as possible.  If you have one or two boards that are thinner than the rest, save them for another project, since planing all of your wood down to that minimum thickness wouldn't be worth it.

Try to keep the boards at least 5/8" thick, and ideally, 3/4" thick, or more.

Step 4: Cut into strips

Picture of Cut into strips
cuttingboard14.jpg
This step is kind of fun - how often do you get to make "random and creative" cuts on a precision tool like a table saw?  

Placing the previously jointed edge against the fence, cut strips of random width from your boards.  Don't make any strips that are too thin (less than 1/2" for example) but vary them randomly over a range of widths.  

There's no right or wrong here.  If you like many stripes in your material, cut thin strips, if you want fewer strips to glue up, cut wider ones.  I cut a whole bunch of different sizes with the small ones being around 3/4" and the wide ones at around 2 1/2".  

Step 5: Lay out cutting boards

Picture of Lay out cutting boards
Once the strips are all cut, arrange them according to your tastes.  I like putting walnut next to maple for nice contrast, and using the paduck and purple heart sparingly so that when it does show up, it really pops.  Make the cutting board whatever size you like.  mine is pretty big because I like to have a lot of room when I chop.  

If you've only got a small amount of scrap material, think about making a cheese board or picnic board.  Or, make 1 large blank and cut them down into 4 smaller boards and give them as gifts.  Lots of options here. 

Whatever dimensions you decide to make your board, glue them up as two separate halves that are no wider than the max width that your planer can accomodate since it saves a lot of sanding time if you an simply run the cutting board halves through the planer.  My planer can't take much more than 12", so I arranged the strips into the large cutting board that I wanted, and then split that into two groups right down the middle to keep them both narrower than 12".

Step 6: Glue strips together

Picture of Glue strips together
cuttingboard21.jpg
cuttingboard22.jpg
cuttingboard23.jpg
cuttingboard24.jpg
cuttingboard26.jpg
Seperating your cutting board strips into two groups, no wider than the max capacity of your planer, glue the strips together using Elmer's® Carpenter's® Wood Glue MAX.  I like using the Elmer's® Carpenter's® Wood Glue MAX version because it's waterproof, which is very important since these cutting boards will definitely be coming into contact with water when they got washed after use.

Lay a thin bead of glue down on each of the strips and use a chip brush to spread the glue evenly along the strip.  Clamp the strips together and use some hearty pieces of wood as cauls to keep everything in line.  Let the strips sit overnight and repeat this process for the second batch of strips.

Step 7: Sand and plane again

Picture of Sand and plane again
cuttingboard28.jpg
When you remove the clamps you should now have two panels, each 1/2 the width of your cutting board.  Use a palm sander with a rough sanding pad to quickly remove the biggest glue marks on the wood.  

Then, run the two boards through the planer, taking off as little material as possible on each of the faces to take off the remaining glue marks.  The boards should now be perfectly flat on both sides.

When they come out of the planer, you can really for the first time get a preview of how nice your cutting board will look.  It really pops!

Step 8: Glue two parts together to form one large board

Picture of Glue two parts together to form one large board
cuttingboard36.jpg
Glue the two boards together using the same technique of squeezing out a bead, spreading the glue evenly with a chip brush and finally clamping over night using cauls to keep everything aligned as mentioned in the previous step to form the full size cutting board.  

Remember, the resulting glued board won't be going into the planer and will have to be sanded by hand, so take extra care when clamping to clean up squeeze out with a wet rag, and or scraper.  It's easier to clean up wet glue than to sand off the dried stuff.

Switch to a longer clamp if you have to for this glue-up since the board is starting to get pretty large.  See me using pipe clamps in the second photo below.

Step 9: Sand again and trim to size

Picture of Sand again and trim to size
cuttingboard37.jpg
Use the palm sander to take off any glue marks and trim the ends of the board to the same length.  

The cutting board I made was too wide to fit in a table saw sled or my sliding miter saw to trim the edge, so I used a circular saw and straight edge instead to cut off the uneven edge.  

*Note that this will set the length of your board, so pick something that's nicely proportioned to the width and make the cut.  This can be a good time to think about whether or not you'd like the board to fit into the sink.  I have a few cutting boards that fit entirely in my sink.  I use these for cutting meat so they can be completely submerged and thoroughly washed.  

The board that I am making in the picture below however is significantly larger than the average cutting board, but I still wanted it to be able to drain into my sink.  The answer here is to make at least one dimension, the length or width, and in this case the width, less than the largest dimension of your sink so at least you can wash the board at an angle in the sink and not make a mess.

Step 10: Round over edges

Picture of Round over edges
cuttingboard40.jpg
cuttingboard41.jpg
cuttingboard42.jpg
cuttingboard55.jpg
I rounded over the top and bottom edges of the cutting board with a round over bit on the router table.  Using a round over bit with a bearing, and the router table fence as a backup makes this job very easy.  

Use a sacrificial follow board as pictured in the fourth photo to prevent any tear out.

Step 11: Rout juice groove

I like to add a groove to one side of my cutting boards to collect the juice that accumulates so that it doesn't make a mess on the counter top.  

Put the router into the plunge base attatchment and fit it with a rounded groove bit.  While there are many ways to cut a juice grove, including using the router table again with stop blocks, or the router with an edge guide, the easiest way for me is to fit the router with a simple pattern bushing and follow a rectangular piece of masonite that I cut to size as a template. 

Size the template to the specific size of your cutting board, taking into account the offset of your bushing and groove bit that you use.

I used painters tape to hold the pattern board in place while I cut the grove into one half of the board.  I then spun the board, switched the tape carefully to the other side, and finished cutting the grove.  

The plunge base is essential here because it allows you to plunge down into the wood to start the cut, and not have to come into the wood from the edge.  

Depending on the size of your grove, cut it in one, or two passes, removing a conservative amount of material each time - better to make two easy passes than one deep, slow pass which might result in burn marks in the grove from when the router was strained.  

Additionally, I don't like to make my groves too deep because they become hard to clean, and it's unrealistic that my cutting board juice groove will ever have to accomodate say, 1 cup of liquid.

Be careful coming around the corners of your template, as this is the hardest part.  To make the corners easier, simply round the corner of the pattern template on the belt sander just a bit.  This will make rounding the corner with the pattern bushing much easier than going around a sharp 90 degree turn.  Thanks for the tip Dad!

Step 12: Finish sanding

Picture of Finish sanding
With all of the woodwork done on the cutting board it's time for the final sanding.  Sand the board using a random orbital palm sander with finer and finer discs until you reach 220 grit.  I like to put items to be sanded on a expanded mesh foam pad so that they stay firmly in place.  

Step 13: Apply food safe finish

Picture of Apply food safe finish
The final step is to apply a food safe finish such as mineral oil or butchers block oil.  

I like using a food safe gel varnish because it's easy to wipe on and off and results in a nice satin shine.  

Make sure whatever finish you decide to use penetrates your wood well, and that you apply more than one coat if possible.  The wood will be exposed to a lot of moisture if you use it frequently, and keeping the finish in good condition is your best protection against warping from water damage.

If you've got any extra material leftover from this project, use it to make a Magnetic Knife Stip. 
Can you use olive oil to finish it?
Datawolf1 year ago
Is flaxseed oil food-safe ?
noahw (author)  Datawolf1 year ago
Yes. It's a nutritional supplement.
vandalex2 years ago
You my friend are a master craftsman
zer62 years ago
we make these in my school's woodshop and sell them for funding. if they are warped after you remove the clamps from gluing you can always joint one side first before planing, as long as your jointer is wide enough. we have a fairly wide planer so we glue all the wood strips together into one board to plane all at once. we've also actually done some of the juice grooves with the CNC machine. all of these things come in handy when you are mass producing these cutting boards. great instructable- it was cool to see a process i am familiar laid out in steps so other people can learn how to do it!
Waterwalker2 years ago
Walnut is a diuretic, not the best material for a cutting board. Padauk has toxins that can cause respiratory failure when you sand or cut it. Oak is open pored, and will retain bacteria.

It looks like all of these wods are in this cutting board. As a woodworker, I only use hard maple when I make a cuttung board.

What you don't know can hurt you. If you want to use your scraps, make a box, not a cutting board.
noahw (author)  Waterwalker2 years ago
I totally hear what you are saying and appreciate your concerns and cautions. I'd just like to respond by saying that there is no oak in this cutting board, and in fact, I warn against using it for the very same reason you pointed out in my tools and materials section.

Regarding the walnut, that's truly the first I've heard of anyone saying that it's not food safe. Horses are allergic to walnut dust and shavings, but not humans. Even people with walnut nut allergies are save to eat off of the wood. Humans have been making bowls out of a walnut for as long as we've been eating out of bowls. Perhaps you have to eat a large amount of walnut to feel it's diuretic effects?

And finally, for the padauk, your point about the dust being caustic to some people is spot on, however, in an inert setting, like a cutting board, where, even under the most extreme chopping conditions the wood is not being aerated as saw dust and inhaled, I feel that it's safe to use.

We all make our own choices about risk management and the way we understand adverse effects. I appreciate your input and thank you for your comment.
I agree, wanut cutting board seems to me to be expensive rather than diurtetic. I have one wholly walnut made and never noticed any duretic effect. I guess it may depend on the several thousands times it has been washed. That jewel is more than fifty years old and is a monument to walnut hardness and durability Great working wood. Olive wood is very hard and aesthetically nice. Hard woods saw dust is thinner and so more dangerous for lungs as any sort of thin powder including baking flour. I advice against detergents, just brush in warm water (on both sides to avoid crakings, as soon as possible.
nbowes2 years ago
over the years I found using a planer does make boards smoother, but DOES NOT MAKE THEM FLAT. If its warped or twisted going in , it will be the same coming out
Hand planing helps here. If you ink a flat surface like glass then place your board on top where it is inked on the board are your high spots, plane these until you get the board reasonably flat on one side then run it through your planer
ddw_az nbowes2 years ago
set the planer to "skim" the serface of the outside of the cup. then when you have a flat area on the outside then flip the board to "skim" the inside of the cupped board.
nbowes ddw_az2 years ago
I was referring to twisted or warped. Cupped is easy
ddw_az nbowes2 years ago
i agree, twisted or warped is HARD.
the only way i can think of is to rip the board into strips, then glue and clamp.
Lewis34562 years ago
This is a very nice project.
Lindie2 years ago
Nice! Great job!
korgoth252 years ago
T hers another ible like this but you take it 1 step further. instead of them all stacked you then take it to the table saw do a few more cuts and its checkered. Either way they turn out great my combo was wenge, blood, brazilian, and maple. the colors really popped.
dantistus2 years ago
This is beautiful! Thank you for sharing your great work. I am so sorry right now that I do not have a workshop and tools so I could do something similar!

And I was just walking home today and saw a couple of guys breaking pretty long (~1 meter) leftover planks of fine wood into smaller pieces and throwing them into trash :(
jaiacosm2 years ago
Its a beautiful table man teach us how it is done. Another way to make it look cool as well is after you"ve glued the strips together and taken all the residual glue away (step 9). Cut the table perpendicular in 1in strips. Then rotate 180 deg every other strip glue it together and sand. you"ll have a cool effect!
Nice wood by the way, I see some cocobolo, purpleheart, some Koa and Cedars maybe?

NICE WORK MAN.
Cheers from Panama
temper2 years ago
LOL - about $300 worth of "exotic" wood there... but as you say, if you have it laying around...
caitlinsdad2 years ago
Be sure to research your "exotic" woods that you use. Although they may be pretty, some do cause allergic reactions and sawdust created in the process should not be inhaled. Cutting with a knife will break the finish and allow it to come in contact with food.
noahw (author)  caitlinsdad2 years ago
Good point caitlinsdad - woods like cocobolo and even the oils in cedar are known offenders on the possibly allergic woods list. Heck, the EPA has found that even the general category of "sawdust" can be carcinogenic in nasal tissues.

What's a woodworker to do?

I'd recommend using proper protection, like a respirator and goggles when cutting, planing and sanding. Wear long sleeves if you get an itchy skin reaction too. That being said, I wouldn't let it get in the way of my project.
Jens242 years ago
Please be sure and note that some wood is treated to be "insect free" which means it should NOT be used with food! If you know where your wood came from it can be safe, if you do not know make sure you ask, many people get ill from "homemade cutting boards" because the wood has been treated!!
noahw (author)  Jens242 years ago
That's a good tip. You should never build anything that you're going to "live with" using pressure treated wood. The tip off's would be to stay away from anything that's bright green or soaking wet with chemicals. Pressure treated wood can be full of all kinds of preservatives, including chromium, copper and arsenic. It keeps the bugs out, but it also has all kinds of serious health effects in humans.

It was assumed in this Instructable that of the scrap wood that you've got lying around to make a cutting board, pressure treated lumber would not be one of them.