## Step 28: Install frets...

Measure the distance between the nut and the saddle (scale length).  At this point, you can research how to calculate fret spacing (if you are a nerd.  actually, the math is really easy, but its already out on the web in a million places), or you can enter this distance into a fret calculator.  I use buildyourguitar.com/resources/fretcalc/fretcalc.htm.  You'll have 12 frets... the program will ask you for that.

Mark the locations given by the calculator on both sides of the neck.

Install the cotter pins at each of these locations.  The cotter pin will poke through each of the layers of corrugation in the fingerboard, so it will take some light pressure and some patience.  If the pins do not lay flat, you may need to use some wood glue to hold them against the finger board.  If you are going to use glue, be sure to double check your fret locations, you won't get another chance.
Thanks!!! Using these plans in combination with a vague PDF plan for a wood soprano ukulele, I ended up getting an incredible and result! Believe it or not the sidewalls and sideboard are just strips of thinly cut strips of scrapped spruce pallet wood. Rest is hickory. Your instructable was the inspiration for this!
Wow, looks great! I don't think i cam claim any credit for what you've done. I love those friction tuners! How does it sound?
Thanks! And surprisingly great. Fun project. What software did you use to create the template? CAD?
Nah. I created it through a really complicated process I call WordCAD. I make most of my drawings in Microsoft Word using lines and arcs, if you draw to scale it works out pretty well. I write a lot of techincial reports at work and have gotten to know Word pretty well.
I used Chip board as they called it in the Philippines. This is as thick as plywood and really sturdy and some scrap ply and mahogany for the wooden parts (neck. Headstock. Bridge. Fingerboard)
Looks great!
Made it for a wedding gift for my friend's hawaiian wedding, thanks!
Those turned out beautiful!!!
<p>is there a way I can make my own tuners? I'm doing a project for physics and we're not allowed to use those. Thanks.</p>
<p>This instructable has a nice solution...</p><p>https://www.instructables.com/id/cigar-box-guitar-in-one-hour-the-Uncle-Crow-way/</p>
<p>Barrel nuts? Then tap hole into bolt to receive the string? You would need a soft metal bolt to be able to get a drill bit through.</p>
<p>the steps are great to let you know exactly what to do, and the finished project actually looks really good! Fun project, you should definately do it.</p>
My bridge keeps flying off. I made the standard bridge and saddle not like this one. And its not working for me
<p>I am excited to get started on this! Do you have the template for the electric ukulele you had at the Maker Faire? I am interested in turning that into a building and electronics project at our school's Maker Space for students and can not find that. Thank you for participating in the Maker Faire. You have inspired me :)</p>
<p>Saw you at the Mini Maker Faire in Denton. My son and I will be building one of these! Nice work!</p><p>Jules</p>
<p>Plus cutaway! (Unstrung to show design) Great instructable! Thx!</p>
<p>It turns out, the strings are soo tight that it bent the neck flat. What am i supposed to do?</p>
<p>I used some pine paint stirrers as a makeshift &quot;truss-rod&quot; dunno how you would implement it if you've already made the neck though...</p>
<p>thanks, i will try to make another neck and re-attach. do you just glue the paint stirrer to the bottom of the neck?</p>
<p>You saw out another neck segment but instead of the cardboard you use the pine.(See below) Sorry for not getting back earlier, Good luck! :)</p>
<p>Plays just like a real one! I dont regret making this as a summer project!</p>
Quick version, thanks for the instructions
Yay! Thank you for sharing!
I completed the ukulele (with changes) i had to make the neck out of a chair i found because someone stepped on the card board one and broke it. I used bamboo twigs for frets and used a picture hanger for the string base. And of course, Bob is the only suitable name for a home made ukulele :)
<p>how did you make your tuners</p>
I just trimmed up some sticks and drilled some holes into said sticks. I just drilled the slots and peg holes into the head with my drill.
I don't know how I am just seeing this now. I like the friction tuners. I've been doing some brainstorming about how to make some hardware store &quot;friction&quot; tuners compatible with cardboard. Not time to experiment right now. Maybe one day. I like your improvisation.
<p>can we replace the nylon string with the guitar string?</p>
<p>I helped my daughter make it for a 7th grade science assignment. We had to modify because she could only use &quot;recycled&quot; items and no musical instrument parts. We used different weights of nylon fishing line for the strings, toothpicks for the frets and eyebolts and nuts for the tuners. The only thing we bought was the small hinges. The &quot;paint&quot; job was done using food coloring and shaving cream on thin stock that we attached to the composite board before putting it together. (We did have to make the neck thinner.) When it was all together, it worked great!!!! My daughter was so happy! She wants to make more: one for her orchestra director (a ukulele fanatic) and for herself but this time using the instrument parts. </p><p>Thank you so much for creating this Instructable!!!!! </p><p>On a separate note, do you have any suggestions for a cutting utensil? We used an Exacto knife but had an extremely difficult cutting through the layers. </p>
<p>I've used this <a href="http://www.amazon.com/EVERSTAR%C2%AE-Fluorine-Corrugated-Cardboard-Microfiber/dp/B00KW4N9CA/ref=sr_1_12?s=hi&ie=UTF8&qid=1407098450&sr=1-12&keywords=cardboard+saw" rel="nofollow">cardboard cutter</a> with my students... takes a few weeks to come in but works quite well.</p>
Awesome! It looks amazing! I'm so excited to hear about your improvements to the design... The tuners and strings are exactly the updates that I wanted to make to the design so that it would be totally possible to build without buying any ukulele specific hardware. A trip to the &quot;Fix-n-Feed&quot; could get you everything you need. Hope she does well on her project and I am very glad you shared with me!<br><br>P.s. Love the colors!
<p>A+, thank you! And it was the only instrument that met the criteria being heard from the back of the room AND gave her extra credit for also being able to play a tune that was recognizable. Her orchestra instructor also was impressed. I believe his exact words were &quot;very cool!&quot;</p>
Oh yeah, I used an exacto blade to cut it, but just because that's what I had. Someone said they were going to try to lay it up and glue it and then use a band saw or scroll saw. No reports back on that. I've built 3 and I used the exacto on all of them.
<p>Okay so I have Three questions, <br>1) What size hinges are you using?<br>2) How thick are the threaded bolts/ nut you used?<br>3) I'm considering also having the uke electric, are there any directions to construct it in the electric format you have available for me? <br>Ps Awesome instructable c: Thanks!</p>
<p>Came out pretty good in my opinion though I used pencils with notches in them for the nut and bridge and toothpicks for frets. There is quite a bit of a curve on the neck because I rushed to get the strings on I guess but it's still playable. :D</p>
<p>can you use hot glue gun </p><p>thanks im really interested in this project </p>
<p>can you use hot glue gun </p><p>thanks im really interested in this project </p>
I started my own and its coming together very easily and quickly. Thank you very much for this instructable. Very clear helpful and informative.
Glad to hear you've started one.... Post some pics when you've got it all done!
<p>thank you so much for the instructable.. Very simple and easy to do. I did cut myself but its all good because I can now say that I made a homemade instrument and not just any one, but a freakin ukulele!!!!!!!</p>
Sweet, glad to hear you made one! Do you have any pics you can post? I would love to see them!
Hi, thanks for this instructable, it looks awesome! I&acute;m trying to make it now but i&acute;m a bit stuck on step 11/12. the neck is way too thick, I can only fit about 6 on there. should I cut the notch wider or leave out some pieces? Also what&acute;s the difference between the a and b neck pieces, is it important? <br>thank you
Did you get your issue figured out? Sounds like your using some thick cardboard for the neck. It's probably okay just to trim the neck pieces and fit the 6 of them in there. <br><br>The a and b pieces are differently shaped in order to simulate a rounded neck. It's not necessary, but will be easier to play.
<p>Sort of...I measured how many pieces made a normal neck size and used that. The uke funcioned after some adjustments but the cardboard is far too weak for the string tension, bends like crazy, even after attempts to brace it with small pieces of wood on the sides. I think I need to make the neck from wood. How did yours not bend? Thanks for the reply :]</p>
This is awesome! Planning to build this Classic cardboard ukulele. Will post pics soon. <br> <br>-Lloyd of Philippines
I don't know what I did wrong but the neck of my ukulele is not more bended because of the tension of the strings... do you think you have a trick to make it bended again
it worked!!! i carved a little bit my fret board and the note is right.<br/><br/>here's a photo of my ukulele
Awesome! Looks really goo! I'm glad it worked out and thanks for sharing your picture!
i will try this and i will tell you if it work
but i don't think its a fret problem. i think its more a problem of hight of the string (sorry if its bad... i'm a french canadian)