Hidden Treasure Box - Inlaid Wood Box with Hidden Compartment

 by technoplastique
Contest WinnerFeatured
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This box has an inlaid wood exterior with a custom mermaid design, padded satin lining, and secret compartment in the bottom that is held closed magnetically and only opens if you know how to do it. I looked at a lot of historical furniture pieces for inspiration - Jefferson boxes, letter boxes, captain's desks and spice cabinets were all often built with very clever hidden compartments. The mechanism I used isn't based on anything historical, but it works well and isn't noticeable if you don't know to look for it.

I lack the time and inclination to become skilled at true marquetry. Anyone who knows anything about early furniture making knows how much time, effort and specialized skill is required. I used the precision of a laser to make up for a lot of that skill and effort. That said, this still isn't a project I would call 'quick and easy.' There is a lot of sanding, drying and finishing time involved.

I chose a mermaid motif for this box. When I was doing the design I just kept coming back to the idea of mermaids. I chose a beach glass green for the lining to keep with the theme.


*Check step 2 for a non-laser alternatives update!*
 
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Step 1: Supplies, Equipment and Safety

Supplies

Wood Veneers - a few square feet
I used Birdseye Maple and Bubinga

1/8 inch plywood - about 5 square feet
This is kind of a specialty product - it's primarily for model airplanes and dollhouses.

1/2 inch diameter dowel - a few inches is enough

Wood Glue
Not a good place to cut costs - cheap glues get brittle and your tiny pieces will chip off.

Sandpaper - 1 sheet each:
220 grit
320 grit
400 grit
600 grit

Woodfiller - light and dark to approximately match your veneers

Tack Cloth

Varnish - water based satin finish is my choice

Clear Contact Paper (clear low tack vinyl)

Rubbing Alcohol

Magnets - two very strong 1/4 magnets

Epoxy - a few drops to glue in the magnets

Metal - 1/2 by 3 or so, has to be magnetic. Soup cans are a good source for this.

Wire nails - a few of them 1/2 long

Satin - about a yard (half a yard would have been enough but it would have been close)

Batting - about a yard

Cardstock - acid free and matched to your satin is best

Thread - to match the satin. Standard sewing thread is fine.

Fabric glue - ideally one that glues fabric to other porous surfaces well

Assorted household type supplies - paper towels, masking tape, scissors, pins, etc.

Tools

Laser access - if you can't find one locally there are quite a few services online that you can find with an internet search. There are some veneer specialists - I didn't use that but it would be worth looking into.

Clamps - all the clamps you can track down in all the sizes you can find (up to about 6 inches of clamping ability.) You'll be using these to hold the veneer as it dries so you'll want a bunch.

Hammer

Needlenose Pliers

Small saw - coping saw or other small, thin hand saw

Tin snips

Utility knife with fresh blades

Small Wood Chisel

Brush for varnish - golden taklon is my first choice because it leaves a smooth finish and is easy to wash out.

Spreader/squeegee/cut cardboard for glue spreading

Letter opener or other dagger shaped non-sharpened instrument

Some scrap flat pieces of wood to protect the veneer when gluing

A few heavy books (Gardner's History of Art works well.)

Safety Gear

Safety Glasses
Dust Mask
Gloves

Use all of these all the time. It's easy to get hurt using tools. If you don't know how to use something find someone who does. Protect your eyes from flying debris, protect your lungs from dust (you don't know what's in the plywood glue or varnish) and keep your hands safe. Sharp tools are always better than dull ones, use the least force required to complete anything.
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tim_n says: Sep 4, 2012. 1:06 AM
How big were your veneers for the cutter? I've found relatively cheap 6" x 10" on ebay, would they be suitable?
technoplastique (author) in reply to tim_nOct 10, 2012. 10:33 AM
I use veneers in all sorts of sizes, you'll need a few pieces at 6x10 but they would definitely work. Sometimes really large pieces will spring into a curve when you're laser cutting sections out of them.
rnorman3 says: Sep 27, 2012. 11:31 AM
for the metal, you say " Metal - 1/2 by 3 or so" and the magnets are "1/4 magnets". are these in inches?
technoplastique (author) in reply to rnorman3Oct 10, 2012. 10:31 AM
Yes, those are inches, I'll fix the text. Thanks!
spidergarnet says: May 10, 2012. 8:24 AM
This is beautiful done
a918bmxr says: Feb 6, 2012. 10:33 PM
great work
absolutely beautiful
keep up the good work
melissa_b04 says: Jul 2, 2011. 9:19 PM
stumbled upon this instructable, and I think it's brilliant. I'm not familiar with any of the items you worked with...veneer, contact paper, etc... I mostly re-utilize stuff... but I am gonna give this a shot. I will definitely start off with a very elementary box though. No designs or secret candy compartment... awesome gift box idea!. Great job girl!
mrehfeld says: Oct 23, 2010. 7:14 AM
HAHA I have the same book and use it for the same reason. I've been shlepping mine around for over 12 years
CottMouMou says: Oct 17, 2010. 11:23 AM
You are a genious! love ya!
MrSpinn says: Oct 29, 2009. 11:16 AM
 How did you carve those notches (dovetails?) They look extremely precise for being carved into 1/8 inch wood.
geoslim13 in reply to MrSpinnSep 15, 2010. 7:05 AM
You can make it precise like that by hand by using a jig that you can buy. my dad has one. Also those aren't dovetails, dovetails look more like triangles. or /_\ .
technoplastique (author) in reply to MrSpinnAug 15, 2010. 9:17 PM
They're laser cut. I've cut some delicate notches by hand before but it's not easy!
joef07 says: Aug 15, 2009. 5:39 AM
hey look in to making a a mayan secret box. there really cool.
technoplastique (author) in reply to joef07Aug 15, 2010. 9:18 PM
Will do! There are so many amazing possibilities in the 'hiding things cleverly' genre.
geoslim13 in reply to technoplastiqueSep 15, 2010. 7:00 AM
I have an idea to lock the secret compartment by using the top as a kind of "combination lock." Once I work it out and try it i will try to post photos.
startree says: Jun 8, 2010. 3:43 PM
great instructable, technoP! and a fabulous bit of work too. Only one thing I'd like would be to have more comments in your photos, helps me keep up with what you've done in a more visual way. But thanks for the effort you've put into the instructable!
paulpcc says: Jan 8, 2009. 4:24 PM
very nice.. i once made a jigsaw puzzle from mdf with a hinged outer box, but that was a sophisticated as i could manage. Would be nice to try out your box. very nice. (for brief moment it reminded me of some kind of pandoras / hellraiser puzzle box) - have you ever tried making one of those? :o)
technoplastique (author) in reply to paulpccJan 9, 2009. 1:25 AM
I haven't tried any other puzzle boxes - aside from junior high industrial tech and framing paintings I haven't really done any other woodwork. I'm really looking forward to playing around with some other designs with secrets, though!
paulpcc in reply to technoplastiqueJan 10, 2009. 12:35 PM
ok cool
hoihoi151 in reply to paulpccApr 12, 2009. 3:13 AM
there are very cool puzzle boxes available. my dad is making me some soon. hehe
Honus says: Feb 25, 2009. 7:42 AM
Fine Woodworking has a build a box contest:
http://finewoodworking.taunton.com/item/7591/build-outside-the-box-official-contest-rules

Could be a contender!
technoplastique (author) in reply to HonusFeb 26, 2009. 12:49 AM
You're so sweet to tell me! Thank you - I'll totally enter that (and the gallery has tons of inspirational ideas!)
Honus in reply to technoplastiqueFeb 26, 2009. 7:29 PM
You're welcome! Glad to help out- hopefully you'll win a really nice table saw.
illdoyourdrugs says: Feb 26, 2009. 2:33 PM
Creative and well done!
DIYfan says: Feb 22, 2009. 9:25 AM
Who chose this project to be a winner? I don't understand the criteria.
prplubell says: Feb 4, 2009. 3:50 PM
hey i love this project but could you please put the design in a word document im afraid i don't have the software to use this but i would really enjoy doing it
fallinfrom0feet says: Feb 4, 2009. 9:19 AM
I love your box and only wish I could make something as beautiful. 2 questions. How much did this cost you to make? roughly.... and Do you have any plans or tips for making such a box (with less detail but still have the hidden compartment) for someone who knows nothing about wood working? lol
mmh says: Feb 1, 2009. 8:28 AM
Congratulations! Nice project. I hope you enjoy the tools.
daltonjcw says: Jan 21, 2009. 6:21 AM
any one know if there is a wood burning Instructable out there ?? if not , race you to it!
mynameisjonas in reply to daltonjcwJan 31, 2009. 11:21 AM
IW5 Industries says: Jan 19, 2009. 1:10 PM
omg you just got the prize congrats!!!!!!!
technoplastique (author) in reply to IW5 IndustriesJan 19, 2009. 3:58 PM
No, it's a fakeout. It says 'winner' because I won a prize in the holiday gift contest. Thanks for the heads up though ;-)
maxidaxi says: Jan 18, 2009. 2:28 PM
wow what a beautiful piece of functional art ! Do you sell these by any chance?,I'm interested in purchasing one or two.Great job.
aristocob says: Jan 13, 2009. 8:49 PM
Very nice inlay work! Good luck in the next round!
technoplastique (author) in reply to aristocobJan 16, 2009. 12:52 AM
Thanks! I'll need it - there were a lot of great projects!
Honus says: Jan 13, 2009. 9:13 PM
What a beautiful piece of work- amazing!
technoplastique (author) in reply to HonusJan 16, 2009. 12:52 AM
Thank you!
gerrrtrudicus says: Jan 8, 2009. 2:12 PM
"No more games Kirsty"
technoplastique (author) in reply to gerrrtrudicusJan 11, 2009. 9:57 AM
Do I know you in real life?
Grey_Wolfe in reply to technoplastiqueJan 13, 2009. 8:41 AM
Lol, there's a story behind this, I'm dying to hear.
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