LumberJocks

MDB #1: Milling S3S ...yes, triangles.

  • Advertise with us
Blog entry by PurpLev posted 08-02-2010 03:32 AM 2136 reads 3 times favorited 13 comments Add to Favorites Watch
no previous part Part 1 of MDB series Part 2: Shave and a Cut - Cross Cut that is »

Disclaimer: This blog follows my Magen David Board that is already finished and posted here

In Highschool I always doodled (I still am). and one of my favorite things was to use the squares on the math papers to form different geometries – mostly with triangles. as I was playing along, I discovered that I could form a star of david (Magen David) and that formation has stuck with me ever since.

When I was introduced to the idea of making cutting boards out of wood, I always wanted to incorporate my sketches and designs into that.

I finally got a chance to put my ideas into motion, and came up with the following design in SketchUp:
original design

SketchUp TIP: Using components you can quickly see how many of a certain component you have in the model by selecting the component. In the Entity Info, it’ll clearly show you that the selected item is a component, and will also show you how many of that such components are in the model.

Using the above model, and the above Tip, I was quickly able to tell that I needed 80 mitered cubes, and 60 regular cubes to make the board. Now it was just a matter of getting it milled.

I figured since the board is mirrored left<->right, I could make strips for half a board twice as thick, and prior to final glue up rip them in half to quicken things up and make alignment easier.

This is where the trouble started :).

All the lumber that I have consists of cutoffs and shorts that were left over from a shop that closed, and since I wanted to get the largest possible geometry, my options were rather limited. I did not have full width boards that I could easily bevel rip to size, but had narrow boards that I could only bevel rip in the middle – with the hopes of using both parts – I was that limited with lumber….yeah.

My next mistake was approaching this project with automation, and mass production in mind. instead of making many small and clean triangles and glueing them one at a time, I figured I could created long beveled glue ups and quicken the creation of the triangles geometries. looking back – considering my source of lumber, I should have cut a massive amount of perfectly shaped triangles and with patience glue them one at a time.

So, after jointing and planing all the lumber I had could yield squares larger than 1” I bevel ripped them to get the triangles. I left a bit extra width on both sides (as much as I could) as I knew those rips would not be clean and will be in need of a cleanup:

Next was the attempt for cleanup. I made the following sled for the planer which would hold the parts at 45 to plane the top flat while still keeping the essential 45 angle:

As you can see, I was focusing on making things fast, dirty, but efficient. unfortunately this was more dirty and fast than efficient as the lack of full support for the parts made the planer lift the parts as they passed the 2nd roller. so my cleaned and flat planed parts – were not so clean, not so flat, and well … not so so.

All aside, and for lack of any additional lumber suitable for this, I decided to move forward and attend any parts that require it as they call for it. I glued up the beveled strips and got this material that I will work with:

Lessons learned:
  • Do not Mass Produce a One-Of design – not until you are actually mass producing them :)
  • Planer sled should have full base support – I will update my sled to accommodate for that.
  • Glueing up beveled strips requires a lot of patience, self control – OR – a set of precut cauls that would hold the parts at the set angle – I didn’t have such, and had to rely on patience and self control – good thing I have those at hand, but for future use – I’ll make myself some guides.

Next up, Super Cuts!

-- ㊍ When in doubt - There is no doubt - Go the safer route.



13 comments so far

View Dusty56's profile

Dusty56

11659 posts in 2341 days


#1 posted 08-02-2010 03:50 AM

So far , so good …keep it coming : )

-- I'm absolutely positive that I couldn't be more uncertain!

View patron's profile

patron

13034 posts in 1994 days


#2 posted 08-02-2010 03:57 AM

well done , sharon ,

and lesson learned and conveyed ,

thanks .

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View Lee A. Jesberger's profile

Lee A. Jesberger

6648 posts in 2632 days


#3 posted 08-02-2010 04:12 AM

Hi Sharon,

Nice work! If I needed to glue up these triangles, I would approach it the same way we make mitered posts. Lay the pieces to be glued together, edge to edge, on blue painters tape. Brush on the glue, and pull the pieces together with the blue tape.

I did a blog on this method a couple years ago. I hope this helps you out.

http://lumberjocks.com/LeeJ/blog/4775

Very cool sketch up work.

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View PurpLev's profile

PurpLev

8476 posts in 2301 days


#4 posted 08-02-2010 04:17 AM

Thanks Lee… now I DID glue up mitered posts before with blue tape… not sure why I didn’t use it this time around – would make the alignment nightmare go away :)... next time I’ll have to remember

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View dustbunny's profile

dustbunny

1149 posts in 1948 days


#5 posted 08-02-2010 04:41 AM

Sharon I actually bought clamps for gluing two 45’s together.
They were a bit expensive, but they are handy to have.
I posted a review-

http://lumberjocks.com/reviews/874

They work perfect. No slipping and sliding, dead on glue ups.

Lisa

-- Imagination rules the world. ~ Napoleon Bonaparte ~ http://quiltedwood.com

View PurpLev's profile

PurpLev

8476 posts in 2301 days


#6 posted 08-02-2010 04:47 AM

sweet Lisa- thats exactly what I was thinking about – didn’t know it’s commecrially available (although – why wouldn’t it). I was thinking about making wooden version of the clamp faces that will fit on a regular clamp.

those miters on your post look so good.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View jack1's profile

jack1

1924 posts in 2680 days


#7 posted 08-02-2010 05:00 AM

Thanks for sharing this. The next time I screw up will probably be tomorrow… If we all did it right the first time no one would bother trying new things.

-- jack -- ...measure once, curse twice!

View dustbunny's profile

dustbunny

1149 posts in 1948 days


#8 posted 08-02-2010 05:04 AM

Thanks Sharon.
I had forgotten about these, I will have to dig them out and do a board.
Thanks for bringing up the topic.
And thanks for the sketch up TIP : )

Lisa

-- Imagination rules the world. ~ Napoleon Bonaparte ~ http://quiltedwood.com

View PurpLev's profile

PurpLev

8476 posts in 2301 days


#9 posted 08-02-2010 05:21 AM

True that Jack – what I like about woodworking – is that even when (and you do) screw up, you can move on, and that imperfection becomes a perfect one of a kinda product.

for what it’s worth – I like to aim for perfection, but I am well aware it is nothing but the light the guides us through – the end result, is somewhat different at times.

Lisa- you are welcome. I’ll probably try to come up with something at some point and post my doings.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Karson's profile

Karson

34876 posts in 3053 days


#10 posted 08-02-2010 02:59 PM

Sharon:

Thanks for the tour and thought process.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware karson_morrison@bigfoot.com †

View PurpLev's profile

PurpLev

8476 posts in 2301 days


#11 posted 08-02-2010 03:17 PM

My pleasure Karson

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View BritBoxmaker's profile

BritBoxmaker

4369 posts in 1689 days


#12 posted 08-02-2010 03:41 PM

I recognise the ends of those triangles, lol. Takes me back to the snakes board!

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View a1Jim's profile

a1Jim

112083 posts in 2230 days


#13 posted 08-02-2010 04:22 PM

That’s a wonderful a design and a great approach. Look forward to the rest of the story Sharon keep up the good work.

-- http://artisticwoodstudio.com Custom furniture

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase