Thanks for becoming a beta-tester of the movable head for the K40 machine.
Please note - this version only fits the regular K40, not the K40D.

PLEASE! I do not want to se this on Thingiverse - if this is going to be uploaded there, it´s by me so i can maintain the package with upcoming updates - thanks!

Inside this ZIP-file you will find two folders, 2mm and 3mm. Choose the one for the thickness of material you have.
You might need to adjust the bed to get best use out of this movable head.

Tools you need to complete this
- A laser machine (duh!)
- Glue (superglue or acrylic glue)
- You might need a file or abrasive paper to fine-tune any hole or gap.
- A bolt, M3 or M4, washers and a wing-nut, or something to turn the bolt easy.
- A drill to make a hole for the bolt, use a smaller one to self-tap the bolt.
(In final version, i will add inserts or nuts inside the head to make this easier)

What i want to know from you
Any problems to attach parts, things not lining up or parts hitting walls, roof, lid or anything inside your machine.
Please report them in the thread on facebook, picture explaining it is a plus :)

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File included in this ZIP to cut

lens-12-1.dxf
lens-12-2.dxf
lens-18-1.dxf
lens-18-2.dxf
base1-1.dxf
base1-2.dxf
base1-3.dxf
stage2-1.dxf
stage2-2.dxf
stage2-1-small.dxf
stage2-2-small.dxf
aligntoolv3.dxf

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How to mount this

Included are 2 heights of the movable part. 
If you know you will only do engraving and cutting thin pieces, 0-10mm use the smaller one (stage2-1-small.dxf and stage2-2-small.dxf)
Regular will give you a 80mm movement, the smaller one 40mm movement.
As a start - i suggest you cut the small version to begin with, the bigger one is for very special uses.

Step 1
Cut all parts
Choose if you need 12 or 18mm lens and only cut the two you need.
lens-12-1.dxf and lens-12-2.dxf will give you the 12mm lens holder
lens-18-1.dxf and lens-18-2.dxf will give you the 18mm lens holder

Step 2
Glue the parts together
This is mostly by spreading glue between the two pieces and glue together. See illustrations in the pictures.
Align them edge to edge on top of each other.

Picture 1.png how to glue base1-1.dxf and base1-2.dxf 
This is easy, just add glue and add to each other. Make sure the bigger hole is on top.

Picture 2.png how to glue base1-3.dxf to each other
Add the piece with a little notch below the piece without a notch. See picture.

Picture 3.png how to glue base1-3.dxf to the baseplate
Align the edges and glue it.

Picture 4.png how to glue stage2-1.dxf and stage2-2.dxf
Make sure to align the rounded part to each other, and to the edges like the picture show

Picture 5.png how to glue lens-xx-1.dxf and lens-xx-2.dxf
Just add them on top of each other and glue. Make sure the bigger hole is up.

Picture 6.png how to glue the lens holder to the movable part.
Align the edges as shown in the picture, and glue it. Use a 90 degree angle to make sure it´s glued perfect.

Picture 7.png
For this you need a bolt, 30-50mm long, a washer and a wing nut, or similar to tighten the movable part.
Use a drill bit to drill in the slot in the middle plate of the 3 top ones (the one with the notch), drill illustrated in red.
Cut off the head of the bolt so you only have a piece of threaded rod left.
Make sure to use proper sized drill for the bolt you are using, M3, M4 or imperial sizes works, check so it can slide in the opening.
Glue the piece of bolt into the hole you drilled.

Picture 8.png
DO NOT glue this, just add the movable part to the baseplate. Attatch the washer and wing nut or knob to your bolt and tighten to hold the height.


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You are now ready to go, make sure the movable part is actually moving, if its really tight - use a file or abrasive paper to make it move easier.
Install the lens and rock on!

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How to set the proper focus?
Included in this file are alignment-tool.dxf - cut this one.
Each step on this piece is marked.
Put this on your material you want to engrave or cut - loosen the wing nut on the head and lower the lens until it touches.
What stage you want depends on what you do.
For engraving - highest step - marked 50.8
For cutting - half of the thickness down from 50.8
Example
2mm thickness, use the 49.8 step
4mm thickness, use the 48.8 step
and so on.

Please report problems in the facebook thread.

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Made by HP Persson - www.k40laser.se