K40 Laser + LightObject Z table + Smoothieboard ? Here is the config file !

No, I’m not dead ! Time flies since my last post but I’m back with what many people asked: the smoothieboard’s config file for my laser setup.

Be careful with this config file, minded for metric operation, but this shouldn’t be a problem because it’s the worldwide measurement unit 🙂

Here is the complete file but for the old firmware (edge-19b1b4d, Nov 15 2015)
Config file for Smoothieboard + K40 + LightObject

Here are the most important parameters:

alpha_steps_per_mm                           157.89           # Steps per mm for alpha stepper
beta_steps_per_mm                            157.89           # Steps per mm for beta stepper
gamma_steps_per_mm                           3169             # Steps per mm for gamma stepper

Alpha and Beta are for X and Y, gamma is for LightObject’s Z-table.

LightObject.com: K40 18mm Laser head w/ air assisted

You just bought a K40 chinese laser cutter ? Unfortunately it’s merely impossible to cut anything with the stock laser head because of the fume spreading the laser beam and stain the less reducing the power.

Here is the solution, LightObject.com made this nice laser head:
LHK40ASM1-500

Delivered without the lens because stock lens doesn’t fit with. This new laser head is made for 18mm lens, stock mirror can be reused (same size).

Here are all the parts, assembly is easy and fast:DSC_0860

I also ordered a standard 18mm lens:
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Overview of all the parts:
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As said, assembly is easy and fast:
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Combined with the power-table I can now cut almost anything ! No more dirty lens !DSC_0899DSC_0900

LightObject.com: Power table/ bed kit for K40 small laser machine

powertable2

I bought a 40W CO² laser from ebay but wasn’t satisfied with for many reason, one of them was the bed, stock bed cannot be lowered even manually. I was also looking for a new laser head with air-assist when I found this power table/bed.

LightObject.com sell a lot of parts for laser and CNC and today I will talk about this nice product through a step-by-step assembly, here is all delivered parts:

Frames
Frames and bed
Belt tensionner, axis and screw
Belt tensionner, axis and screw
Pulley and z-axis
Pulley and threaded-rod (with bearing)
Belt and stepper motor
Belt and stepper motor

Let’s start the assembly with the lower frame and the four threaded-rod, simply insert the bearing in the frame:
.DSC_0873

Insert the four axis:
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Remove the bearing and the upper lock nut:DSC_0876DSC_0875

Turn all the four nut:
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Pre-install the belt and the stepper:
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Fasten the stepper with the two screw:
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Install the belt-tensioner, with light tension as long as the assembly isn’t done:DSC_0881

Install the bed (and the lock nut):
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We removed the bearing from threaded rod, now it’s time to install them in the upper frame by gently pushing them in the blind hole, if it’s hard to insert try another bearing/blind-hole combinaison, never use a hammer !
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The upper frame can now take place, don’t forget the previously removed lock nut. Simply insert the threaded rod in the bearing:
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Fasten the upper frame with screw:
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Almost done, you can now adjust the belt tensioner:DSC_0891

Flip the power-table upside down:
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The lock nut is in contact with the upper frame and the bed lay on the four lock nut, it’s now time to lock them all:
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And it’s done !
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A pleasant hour long is required for the assembly but if you don’t take photography it’s done in less a half-hour !

Here is my power-table in place in my K40 CO² laser (I painted it white because the stock blue color give me cancer !)
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