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Crashoverride

K40 CO2 Laser -= Vitamins =-

by Crashoverride Jun 20, 2015
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how do you mount diodes and what size bolt does the air assist require?

just looking for more information

The nozzle part is a nightmare to print.
Please remove the unneccessary thin wall in the model that "holds" the inner ring

Do You have laser pointer holder to this carrier?

I made this and then found on the newer model they are selling as the K3020 that the X-End bracket hits the back wall when it goes to home, also the cable chain was sitting to far back at the head and was also striking the back wall, so chopped and modified them a bit and will post the remix for those with the newer machines.

What cable chain attaches to your mounts?

Did you ever mount a laser to this?

The air pipe connection confuses me as well.. In one picture you have it connected to the carriage, in another its connected to the nozzle. Is the intent to eventually have the air hose connected to the carriage then another line from the carriage to the cone for easier removal?

Whats the difference between all the various cones? Height or?

I'm working on getting one of these K40's, its a huge price difference between one with the air assist and laser pointer and the ones without it, around $300 difference. So i was thinking of getting the cheaper unit and adding these parts myself for the same outcome.

I found some suitable cross pattern laser modules on ebay, so i would just have to design a holder for the laser to go on the carriage plate you designed and i would be off and running!

Ah, so you have the air pipe connect directly to the cone. In the initial top down photo it is attached to the carriage and I thought the cone was supposed to line up in some way that the air flowed from one to the other.

Don't wory about the cone - I will create my own version to suit after I finish printing a cable chain and make some suitable ends.

Ok, so I have printed the carriage and the cable carrier without issue. But there are a few things I don’t understand.

First the nozzle design includes a thin inside wall (like a sleeve) This has a tendency to stick to the main wall and reduces the overall inside diameter of the nose cone so it no longer fits over the laser head. What is the purpose of this?

Second I don’t see how the cone physically attaches in such a way that the air inlet lines up with the carriage.

Do you have a picture of the underside of the carriage with the cone fitted?

the inside wall is there to provide a support structure since the nozzle internal diameter is changing with length. I can remove it for you if this will help but I didn't have any problems with it printing at 0.25 layer height and 0.4 nozzle. The cone is a bit longer than those available here, the reason for this is that I use an airbrush compressor for my laser cutter and with the nozzle outlet being closer to the material it gives a better air flow/air pressure which is very useful especially when I cut multi layered cardboard. The bad thing about this design is that you will need either to modify your y axis endstop or cut your fumes extractor channel (by approx. 20mm), without these modifications the nozzle will probably hit your fumes extractor when homing. I've chosen option 2... btw I used nozzle ver. 1.4.. I've attached picture of the underside of the carriage.