Tag Archives: sketchup

This Week in the Woodshop: Footboard, Pt. 2

Last week, I showed everyone the biggest project sitting on my workbench.  This week I completed the footboard just in time for Valentine’s Day.  I celebrated its completion by buying my wife a dozen roses, and taking her on not one, but two, dates in one weekend.

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Completed footboard. Click on the picture to see the Sketch Up file and examine the construction.

But I’m back in the doghouse, I mean, woodshop now.

I hope you enjoyed the pictures.  I designed the footboard with dovetailed (and splinted) carcass, rear panels from birch ply floating in dados, solid wood support beams on the ends.

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Finishing this guy was an adventure in and of itself.  I discovered a rule about shellac: never use shellac when it’s raining.  The humidity causes a white-ish blushing.  I had to wipe off the shellac with a rag soaked in alcohol to solve the issue…which caused most of the unevenness you can see in the photos.  It’s not terribly noticeable in real life, but the flash brings out the worst.

Make it safe & keep the rubber-side down  this week.

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Classroom Project: Try Squares

In my Applied Mathematics class, woodshop has put the shop in applied.  During a unit on fractions, I asked students to build a number of these try squares, all different shapes and sizes.  In order to assess my students ability to read a ruler and calculate fractions, I made all the dimensions wonky.  No 8″ cuts for my students!  Dimensions looked like 8 3/4″, 4 3/8″, 5 “1/16 and all sorts of foolishness.  Once I felt my students had mastered the build process, we took our show to Houston’s Mini-Maker Faire!

Try Square

Click here to download the File from Sketch Up’s 3D Warehouse

The construction process for a tool like this can be as complex as you want, something simpler, or something you can complete in five minutes.  The five minute version sounds like this:

1.  Cut your beam from straight-edged 1″or 3/4″ x 1/4″ thick stock.  I like mine about 8″.  You can get thin stock like this at Home Depot or Lowe’s, but I’m not sure on the widths available.

2.  Cut three 6″ lengths to become your try square stock.

3.  Use a speed square set the interior angle while you clamp the four pieces together with carpenters glue.  The middle piece of stock should stick out of the center by the width of your beam.

4.  Wait until the glue dries.  Carefully use a chisel or file to remove the squeeze out.

5. Check accuracy.

"Be Square With the World, Take Good Care of Your Tools" - The Carpenter, Guy Clark

“Be Square With the World, Take Good Care of Your Tools” – The Carpenter, Guy Clark

At the end of every square build, we tested the accuracy of our try squares.  I used this pdf to explain the process and try to introduce proportions to my young charges.  We successfully created a handful of accurate try squares.  We created way more inaccurate try squares.  I know, you could use those other plans and have a perfect try square.  You could build ten of mine and come away with three working models!

I’ve found this is a great project for medium-sized hands.  With the smaller students (or quicker builds) we screwed the stock and beam together.

How accurate will your try square be?

 

 

Make it safe & keep the rubber-side down this weekend!

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This Week In the Classroom: Sketch Up Projects at the Middle School Level

In support of my Mathematics and Technology and Computer Applications: CAD courses, I’ve offered a number of Sketch Up projects for students to complete.  In Mathematics and Technology, my students created eukaryotic animal cells while in Computer Applications the students created square, triangle and hexagon – based tessellations and designs.  Two resources I used heavily in the design and implementation of these projects:  Google Sketch Up 8 Hands – On: Student Coursework and the GeomeTrick series both by Bonnie Roskes of www.3dvinci.net.

Ms. Roskes projects have a real wow factor in the classroom.  My students would shout my name to show off their work, get frustrated during transitions away from the computer and talk incessantly about how awesome the class is going during lunch.

You can see some results of modified projects below.  She wrote her manuals in a clear, concise and picture-heavy style suitable for high-school and collegiate level work.  My classes skew to the younger range, about fourth through seventh grade, of reading comprehension so I found them less useful as step-by-step guides.  I mainly used them for my own growth as a CAD draftsman and a source of inspiration.

Enjoy the student’s work!

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Make it safe & keep the rubberside down this week.  Eat some turkey.

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Filed under Book Review, CAD Lab, Classroom Project, Education, This Week In the Classroom

This Week in the Shop: Merchandise Display

It’s taken me a few years, but I’ve begun accepting commissions.  A friend of mine came with a project I couldn’t refuse.  He wanted a chest to haul around the merchandise related to his rock band.  He said he wanted something that light up the event and highlighted the band’s name.  I knew just what he wanted!

I started with this SketchUp draft:

It has room for CDs, t-shirts, bumper stickers and t-shirts.  My final design veered a little from this, but the basic shape was there.

I began with a 30″ long, 18″ deep, 7″ high box.  I chose box joints as the joinery.  I recently acquired a table saw (Jet Supersaw with sliding table) which made the production of those joints easy.  I shot a dado down both top and bottom to fit the 1/4″ plywood top and bottom panels.  I dry-fitted the box, dissembled it, then ripped the top and bottom apart on the table saw.

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Next up came fitting the nameplate.  This took a little finessing.  I decided on a 2″ by 20″ removable nameplate fitted into a frame and panel type groove with a piece of acrylic as protection.  I ripped the front face apart into four sections: a 1″ wide top rail, about a 1.5″ bottom rail and two stiles.  After reassembling the piece to check the joinery, I needed to make a dado groove for the faceplate and acrylic.  The groove necessary was just a hair (and I mean a hair) over an 1/8″ of an inch wide.  So I went to my router table (oh, I should mention – this step meant I had to build a tablesaw/router table combo machine first.  Nothin’ like buying and building 1000 dollar tools for a 100 dollar project) and shot a stopped dado down the rails and stiles.  In order to get the faceplate to fit, I made a starter groove just a hair off center, then reversed the parts to get a centered groove.  (If that doesn’t make sense to you, watch an episode of Norm) Finally, I glued up the bottom half of the front face and attached the top rail via #8 Phillips-head wood screws.  If the band name changes, so does the display.

The interior partitions came together next.  The front compartment, which holds the lighting assembly, is simply a horizontal cross piece with a plywood top attached via three small hinges.  I ripped matching dadoes across the cross bar and rear face of the box.  1/4″ plywood creates the CD racks.  A piano hinge flips the top, while a hobby chain keeps the top constrained.  Last but not least, a pair of latches keeps everything tied down for transport.

I went with a simple black acrylic base and polycrylic topcoat.  Sprayed it on with a Critter spraygun.  Hope you enjoy the results.

If you have a rockband I’ve got a little something for you…call me, maybe?

Expect some new “In the Classroom” posts: the boys are back in town!

Make it safe & keep the rubberside down this weekend.  Like WoodshopCowboy on Facebook and get yerself in the drawing for a little something.

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Woodworking Plans: The Kid’s Bed Frame

Last year, I posted a quick project: The Bed Frame.  It has since become the most searched for post on this website, garnering a little over a thousand views with no publicity.  People like to build beds.

It’s taken a while, but I’ve put together a small PDF which outlines how I make my simple bed frames.  You can catch the goodness here:  The Kid’s Bed Frame Plan

If you build it…send me pictures at woodshopcowboy @ gmail.com!  If you have critiques, send them to a different address…I mean, send them over too.

Remember to like WoodshopCowboy on Facebook and be entered for a prize drawing.

Make it safe & keep the rubberside down this week.

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Sketch Up Model: Play Table with Simple Benches

I will use some 1/2″ plywood to put together this play table for my two sons this weekend.

I’ve begun uploading a number of my project designs into Google 3D Warehouselook for WoodshopCowboy!

Make it safe & keep the rubber side down this weekend!

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Technology in Education: The Digital STEM Fair

You’ve been to a science fair, right?  Tri-fold boards, volcanoes and blue ribbons.  This month, my colleagues and I shepherded the “STEM Fair” into existence.  The STEM Fair is a showcase for any Science, Technology, Engineering or Math project our students produced over the course of a month.  My school produced forty to fifty blog posts, hundreds of digital pictures, a dozen two minute videos, thirty presentations and about ten individual physical showcases.  I have a room filled with Japanese art-chemistry, rocket cars, rockets of various propulsion methods, a small robot, a Lego-Branded robot, paper gliders, a seesaw and more.  How can a teacher show off his students work to parents, grandparents, etc who may not be able to attend the event physically?

The Digital STEM Fair.

I have I ever told you this is my other…other….other blog?  I have a handle at Lumberjocks, I blog here and I blog at school.  Well, my students blog.  I facilitate the school’s Website Committee.  Last year, I revamped the committee’s operation – launching a WordPress-powered blog.  This year, I opened the site to the various other parts of school – student newspaper, various academic classes and clubs.  This week, I will use this student-centered, student-owned tool to create a digital gateway into the Math/Sci department at my school.

The Plan:

A splash page which directs parents to the different classes.  The classes will link to STEM Project Proposals, Updates & Final Posts.  All of this can be sorted by a strong tagging system.  WordPress also makes certain posts “sticky” – meaning they always lead the blog’s front page.  I’d like to “farm” this work out to my students, but most likely I’ll need to do this, as I have administrator access.

Next, I’ll have the students upload their videos to a web-hosting service and embed those videos into the posts itself.  I use Youtube as a video host, so I need to turn of the “suggested video” option.  If a “suggested video” happens to be controversial, we don’t want people thinking it’s the school’s issue.

Lastly, my students will create a inclusive slideshow of the work they did, embedding this into the splash page.

Our school does have some rules which I should be aware of -

1. Each kid’s parents/guardian signs a media release.

2. Only use first names.

3. Any video is unsearchable & password protected.  WordPress can password protect individual posts and many sites like Youtube have an unlisted option.

4.  Don’t put anything up which shows the school in a bad light…

5.  Last but not least, turn comments off.

I like these rules – if you blog about children, take them into account.  Teacher Tom only posts pictures of kids hands and keeps the screen squiggly.  Other bloggers do the same.  I tend to only take shots of the finished products. Unlike my examples, the student blog has a kid-driven focus – its intent is to show our students and their competence.  I try to keep that in mind as I put student work “out there”.

Make it safe & keep the rubber side down.

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STEM Project: The CO2 Rocket Car

This is my favorite project from this month’s STEM Fair.  A student of mine decided to build CO2 Rocket cars.  I loved building one of these in middle school.  I distinctly remember my simple teardrop design coming in last and remarking – well, that’s unfair.  I didn’t know I could do THAT! – when I saw the winners thin, stretchy, leggy thing.  I looked like a duck next to a greyhound.

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Last time, my teacher bought a kit.  This time, I chose a simple design for this piece – a pine wedge cut from a 2×4, 1/4 inch dowels as axles and wheels cut from plywood using a hole saw.  A 3/4 inch Forster bit cut away the hole for a CO2 cartridge (bought at the late night supply run superstore) Walmart – shooting goods section!.  My student assembled it and I rigged a firing mechanism and guide rails.

I know my next CAD/Aerospace mash – up.  Gliders, racing boats, rocket cars…any other type of fluid dynamics we need to cover?

Make it safe & keep the rubber side down this weekend.

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New Year, New Classes

Spring 2012 is here!  I have just a (few) new classes.  A quick rundown after the jump:

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Course Curriculum: Computer Applications:CAD

After my quick reflections on the Tea Box project and my computer science course, I’d like to take a spin over to my most successful, challenging and rewarding class(es) this semester.  I had the opportunity to teach 2 CAD courses with a great, energetic group of young men (and one woman).  As the year progressed my classes split into three distinct groups – a developmentally young (think elementary-school-age brains) group, a progressing (middle-school-age brains) and a developmentally-ready (high school or middle school) group.

My CAD course description:

In this course, students will create and build physical and digital representations of the world around them. Piaget’s four stages of cognitive development will frame the instruction to the appropriate cognitive developmental level for each student. Computer Assisted Design is the use of computers and specialized software to create digital objects; be they animations, skyscrapers or the interiors of engines. Students will use Google Sketch Up 8 to re-create and re-imagine the world around them, beginning with a floor-plan of their bedroom and ending with a self-directed project.

What made this course successful?  My answer after the jump.

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