Showing posts with label belt sander. Show all posts
Showing posts with label belt sander. Show all posts

Monday, October 12, 2015

Covering my assets

Those are some big clamps

This picture may be deceiving.  I am not, in fact, gluing up another body blank.  The above photo is documenting the first stage of making a veneer for the headstock overlay.  I did this once before on a lapsteel guitar that I built.  But in that case I was using store-bought paper thin veneer and it was to cover up a rather glaring mistake.  This time I'm making it from scratch and it is to tie the neck and the body together in an aesthetic way.  The above laminations are some of the scraps left over from gluing the body blank together.   The two outer pieces are Lacewood, the middle pieces are Basswood and center piece is Purpleheart.  Instead of using the extra mahogany I had left over I just turned the Lacewood on its side - to really show off the laces - as I felt this was missing from the body blank.  I glued and clamped just like with the body blank and was left with this:

Hey, look at that...
A chunk of wood!
Since this was going to need a lot of work - I didn't sand or scrape it much at this point.  I did scrape away any excess dried glue (aka squeeze-out) on the face - but only enough so that this would be flat - not finished.
All your fetishes, nightmares, and guitar plans can be found on the interwebs.
As I am building a Les Paul style guitar - I wanted a Les Paul style headstock.  The Epiphone that I have been using to model/measure doesn't have the traditional Les Paul headstock - so I went digging (or is it trolling - I can never remember) on the internet.  The above image is what I found.  I don't love the above image.  It's close to the shape I had in mind but it's not exact.  The very top of the headstock looks like an open book (or a mustache).  This version is a bit too voluptuous for my taste. I think it should be a bit more subdued.  So, I'll probably modify this.

Anywho!  Depending on which headstock you are creating an homage to, you would: find the image, print it out and then take an exacto blade to it.  And you are left with:

No trademark infringement is intended or implied
One other issue that is a bit of a problem for me is that the headstock on the neck I am modifying isn't the same length or width as the above template.  So, I will need to nip and tuck a bit - on both the existing headstock and the template.  That may cause havoc with the tuning peg holes (the six circles in the above picture).  But we'll burn that bridge when we get to it...

You know the drill...
You trace!

It's the same as about...
You cut with a jig saw!

50% of the posts on here...
You sand!
It's all a bit repetitive, no?

Ah!  Here's something new and dangerous...

You are left with a big frickin block of wood.  How the heck are you going to add this to the headstock?  It'll be two inches thick...?  

Now is the time that you make yourself a veneer (aka a really thin piece of wood).  The best way to do this in a home shop is with a band saw.  Sadly, I don't have one.  And I wasn't wild about the idea of using the jig saw for this.  A jig saw would just make a mess of it.

You could try using a table saw and running the piece through once then flipping it over and running it through again.  But how do you hold such a small piece of wood with a spinning blade of death so close to your fingers?  (No, seriously, if any wood workers want to share that bit of wisdom - I'm open!).  The safest way (and the most time consuming by far) is to use a hand saw in a miter box.  

...so, of course I didn't do it that way either...

I covered the whole thing in double-sided tape, stuck it to the end of a 4 by 4 piece of stock, and ran it through the chop saw.

Kind of like this...
Lessons learned?  
Well... It worked!  
And the saw didn't kick the wood out and hit me in the teeth.  So, I'm kind of happy about that.  

In truth - even after it went through the saw - the workpiece was still pretty stuck to the 4 by 4.  So, it was fairly safe.  I didn't take pictures of this because I was concerned that someone would try it and lose an eyeball (wear your eye protection, you whippersnappers!) but I thought I should come clean - as a big part of this blog is to share my experiences - not just the outcomes.  

Having said that - just as a way to cover my own, ahem, assets - please test the adhesion before you try this.  I made sure that the workpiece and the 4 by 4 were strongly adhered to each other.  I kept my body and face away from the most likely kick-out path of the workpiece.  And I wore enough protection that most of my face was covered (eyes, ears, and nose/mouth).

Another thing that I didn't photograph (but should share) is that I had to do this a second time because the above veneer was too thick.  The second one was about two thirds as thick as the above veneer - and that's the one you see in the photos below.  I used the same process and had the same results.  
I'm always open to safer methods - so please feel free to comment if you have an opinion.

I mustache you...
Do you know how to use that thing?
After the veneer was cut to thickness - it needed to be reshaped to fit the headstock of the neck I'm using.  I used a coping saw to cut the rough shape of the top and also remove a bit from the bottom (where it meets the neck/nut) with the chop saw.  It's hard to see in the below picture but the existing headstock is asymmetrical - so that's why it had to be shorter - as the new headstock shape is symmetrical.


Pictured: Fiddly Routing
Once the headstock veneer was close enough to the shape that I want (yet still fit on the existing headstock) it was time to bust out the router.  Now, with such a thin template (the actual veneer) and the intricacy of the shape - this was some finicky (nay fiddly) routing.  I tried using the double-sided tape to adhere the veneer and the existing headstock - and it worked like a champ.  So, I didn't need to break out any clamps for this job - which made it easier.  Be careful though - if you don't use enough tape - the router will turn that veneer into a missile
.
That's when it goes from fiddling about to flinging about

As you can see - there is some clean up work to be done.  Much of it can be done with the belt sander. Some needs to be done with a coping saw, micro files, and a very sharp chisel.  

How sharp?
Very.
When we get to the part where I glue the veneer to the headstock I'll tackle this properly.  
There's still loads to do (tuning key holes, final shaping, binding, etc.).
Until then here is a preview of things to come.


Dirty Irish Money
Dirty Sexy Guitar



Wednesday, April 22, 2015

Oh look, more templates!

Pictured: The Topography of Desire
Remember a while back when I said, "My thought process (if we are going to call it that) is that digging holes is probably what should be next." And by digging holes I meant the neck pocket and the pickup cavities.  My reasoning was that a flat guitar body is easier to route than a curved guitar body.  There is a sort of simple (nay, simplistic) logic to it: It's easier to balance on a brick than on a basketball.

If you have been reading along - you probably have guessed that this was not, in fact, what I did next.  As I write this post neither of the body blanks has a neck pocket or pickup cavities carved out.  I blame this development on Scott Wilkinson.

Who is Scott Wilkinson you ask and why am I blaming thim?

When I start any new guitar build - I do a fair amount of research as to the process involved.  I try to identify a few different ways that other people have accomplished things and pick the one that is most closely aligned with my skill set and current tool compliment.  Quite often I borrow a little from several approaches.  But really, I like to see how other people have tackled their projects and in what order (and why).  

Scott (also known as ExNihilo on the MyLesPaul.com forum) outlined a very clear process for how to build a Les Paul based on the classic 1950's version of the guitar.  I decided that since his approach was so well documented and lauded that there might be something to it.  The reasoning is this: it will be difficult to gauge the proper depths and placements for the neck pocket and pickup cavities until the body blank is in a semi-final size/shape.  To be clear - my build differs from Scott's in a few crucial ways but using his experience as a guide -  the next logical step for me is to carve the tops of these body blanks.

Which of course means more frickin' templates... 

Courtesy of Scott Wilkinson (aka ExNihilo)
In addition to posting his build experience online Scott also posted a PDF of the templates that he created to carve the top of his Les Paul using a router.  So, because I was having so much fun making templates I decided, "Why not make seven more?"

Not Pictured: Tons of Fun!
The PDF helps you carve the guitar top by breaking it out into unique strata that you route to different depths.  When I get to the actual routing this will make more sense but for now - each line in the drawing equates to a different template that I will use to rout the body blank.

I chose to print out one of these PDFs and cut out each individual strata.  It seems like most people print out seven PDFs and cut away what they don't need.  Both ways work.  But my way was very 'fussy' when it came to tracing them as the paper strips were pretty flimsy.




If I were to do it again - I probably wouldn't try to save the trees.  I'd spend more time saving my sanity by printing out the seven pages. 

...the tree-hugger in me died a little bit writing that sentence (but then again my hobby requires trees to be cut down so who's fooling who?).  

Regardless of the method you use - the goal is to end up with seven templates of different sizes. I used the jig saw again to cut out the rough shapes and then cleaned them up with the belt/disc sander. - just like I did with the body blank template.  This process kicks up a lot of sawdust.

Post Jig Saw but Pre Belt Sander

Now might be a good time to mention dust management / mitigation. 

You shoulda seen my shoes!

See that?  It's sawdust.  



Lots and lots of sawdust

I'm no doctor but my guess is that a bunch of this crap in your lungs probably isn't good for you.  So, I wore a dust mask while shaping these on the sander.  In fact - I've been wearing eye, ear, and dust protection for most of the steps in this blog. 


The first time you put one on you have to say, "Luke, I am your father!"
It's the law.

Since I don't have a dust collection system or air cleaner in my shop I went overboard with a heavy-duty dust mask.  The one in the above picture is really meant for spraying finishes or other VOCs.  A sanding/painters mask is probably good enough.  I like using it because it works really well at keeping dust out of my lungs and because regular dust masks usually fog up my eye protection and this doesn't.

They are your lungs - so do what you like.  But if you are going to make a habit of this hobby (and you don't have the cash for a real dust collection system) you might want to think about picking one of these up.

Guitars are like onions...
...or is it parfait?
In the end - you sand - you shape - you take your time and try not to lose your mind doing the same thing over and over.  I'll share a secret with you - not one of those templates is exactly like the drawing they are supposed to emulate.  These are just to get you to a starting point with your top.  There is a whole lot of planing, sanding, and scraping that needs to be done after the router and these templates are packed away.  Don't fuss and fret over these.  It's a long road ahead.


You may be wondering what the lines are on the above templates.  They are to help me line up the templates with the body blanks.  I'll draw a similar set of lines on the body blank and use these registration marks to lmatch everything up correctly.

As a final note:  This is just one way to carve a top.  In my research I also found a phenomenally talented (and tattooed) luthier who did this all free-hand with an angle grinder.  Go your own way!



Sunday, April 5, 2015

Making the thing that helps me make the thing - Part 1

Pictured: Not a guitar

Templates.  Templates are cool.  If you have one you know where you are going.  Right there in front of you is a plan - a road map - a visual representation of the thing that you are going to make.  You know how far to the left you need to push and how much to the right you have to pull.  And you trust that the person who made the template knew what they were doing.

I'm making templates - and have no idea what I'm doing...

Okay, not no idea. This is not my first time making a template.  I've made a couple.  Usually by tracing the outline of a guitar that I already own and cutting out the shape.  Previously I've used MDF as my template material of choice.  Mainly because it is rigid, easy to shape and doesn't warp much with changes in humidity.  It is, however, defenseless against moisture.  If a drop of water falls on it - it puffs up like rising dough.  Also, it is more likely to burn than wood when using tools on it (like a router or a table saw).  The reason is because MDF is basically wood powder and glue.

Well, my local Lowes didn't have any MDF smaller than 8x4 sheets.  I have no need for that much MDF.  So, I bought some particle board.  I usually don't use particle board for this kind of work - as it seems a bit too 'crumbly.'  But I have to say - my experience this time may change that perception.

Second verse - same as the first

I used the same process for this template that I did for cutting out the body blanks - with two variations.
1) I used a much finer tooth blade on the jig saw.  The Particle board is thin (3/4 of an inch) and I wanted the cut to be smooth - so you use a blade with more teeth for a more finished edge.
2) I made a lot more relief cuts than I did for the body blanks.  I really wanted to get as close to the line as possible.

My plan was to then use a 'drum sander' bit on my drill press to sand away the excess particle board.
Yeah, I'd still be out there if I had gone this route.  The drum sander bit works pretty well on the MDF.  The particle board just laughed and laughed and laughed...


I do not fear you little puny drum sander.


I believe the phrase the kids use these days is, "That's when shit got real."

Say hello to my little friend!

If I had thought about it for two seconds I would have just started with the belt/disc sander in the first place.  Not just because - 'ug ug me like power tools' - but because what I'm looking for here is precision.  That disc sander has a guide on it.  A guide you can set to be 90 degrees - with measurements and everything!  At the end of the day I want the template to be accurate, precise, and easy to use.  The disc sander will give me a better chance at accuracy than the drum sander or hand sander.  ...and it was a hell of a lot faster too!

Forecast for tonight: Sawdust all up in your grill

Now might be a good time to mention some disc sander etiquette.  See that disc?  It spins in one direction.  If you hold your work-piece on one side of the disc (in the above photo the left side - like I'm doing) the rotation of the sandpaper pushes it down.  If you hold your work-piece on the other side (in this instance - the right side of the disc) - Oh, hey look, it's raining wood!

I tell you only to spare you from what has happened to me.  I damn near gave myself a black eye the first time I used this thing.

Another cool thing about this tool is the other half - the belt sander.  Doubly cool for this project because the Les Paul cutaway fits in there like they were meant for each other.

It's like I've been waiting my whole life just for you.

What is triply cool is that I now have a decent template that I can use on any future Les Paul builds.