Відео

Thank you

I used a super light oil. I think SAE10. Does that sound right? Something, something 10 anyway.

Can we use belt drives for this ?

Hi I have issue with me k40 laser. For engraving it works fine, but when cutting it starts at incorrect position and will cut at different point every time.

thats still quite allot of whip, what i dont get is who thought compression was a good idea ? when tension used be aware you need to change out your bearings , to trust bearings not only axial. or you will destroy them in no time. nice video anyhow !!

Thanks a lot from Latvia country. Today first time switched on and had the same problem. 👍

I have one of the very early 1000mm x 1000mm Workbees and, being a cheapskate, I don't want to scrap the existing lead screws for ones only a few millimetres longer to allow tensioning the lead screws with a clamp on the "free" end. I plan to drill and tap this end of each lead screw and locktite a 14.9 grade M3 stud in. This will allow me to tension the lead screw fairly accurately because the tension can be obtained by stretching the lead screw by a well controlled amount using the fine pitch of the stud. For a 1000mm lead screw I estimate we need of the order 0.2mm of stretch to obtain around 100kgf tension in the lead screw.

Hi Sean, Purchased your air assist drag chain recently and need some help or suggestions. I thought that your drag chain could work but my K40 already has a drag chain installed for a red dot guidance system and my laser nozzle mounting plate is different. I would have to stack your chain on top of the existing to make it work and then it's too high. Before I return via Etsy, any suggestions??

hello can you explain me how to connect the limit switch thx

It's not the pressure... it's the vibrations of the motor going long the rod and multiplying in the middle

Also. If I'm using a new piece of steel for the lower layer do I need to worry about reflecting the beam upward and burning things?

what's the height of those magnetic standoffs for the sheet of steel?

I used the thinnest oil I could find. SAE 10 I believe. Sawing machine oil. It's been OK for quite a while. I keep an eye on it for dust and the like, but so far, problem fixed.

Fantastic

Great, down to earth advice. Thanks

Hi Sean, just installed the drag chain I ordered from you. It was super easy to install and works really well. It is clear lots of thought and effort went into your solution. Thank you for the product and the fast shipping.

When I added a 25L air assist to my k40 laser It turns on and off by itself, what is the SOLUTION please 🥺

Been updating my k40 and the bed is something I was looking into. 100mm Got a scissor lift but it was wonky and took away too much space beneath it. Was looking at belt raising contraptions and they also seemed to loose space and have problems with bolts coming through in useable bed space. This is an awesome simple idea that is most probably faster for known thicknesses. This was worth a subscribe.

Thank you!!!!

Hi I got a problem I do an engraving then go to cut it out, but the cut is off by 1cm or so, any ideas???

Great simple Idea for sure, Thanks.

есть отличный вариант - вращающаяся гайка. сейчас у китайцев моторы со сквозной резьбой можно купить готовые. загвоздка одна есть - выборка люфта в паре винт-гайка.

Hello Sean, great idea. I just removed the stock bed and offsets that came on my new OMTech K40 and was unsure of what to replace it with. Well, now I know! Thanks.

Just ordered it through Etsy. Thanks Sean. Hope it's as easy to install for me. Just got my OMTech K40 three days ago. Getting everything ready to fire it up.

Do you have your 24v circuit “floating” I don’t see anything bonding V- to ground.

Well done and easy to do ! Great! Thanks

Sounds like what you’re saying is that the long axis needs a bigger dia screw. Is it a 2 start? Good video.

Glad to see this setup. I ordered it within 10 minutes of watching the video.

The new Workman has the Tingle tension system installed.

+1 I love your videos, I'm thinking to order the Queenbee Pro, where most of the improvements made by user should be incorporated. I hope you have time to make some more video on CNC cause they're so good. Just subscribed! :-)

Wow thas amazing simple solution. but where can i find your STL files for the standoffs?

What's a meter?

Essa controladora tem entrada para encoder incremental

Buenas puedes subir el archivo en el q pones los imanes? GraciS

just remember this laser was not made for the high street, it was made for one purpose to churn out rubber stamps all day long, thats why the bed size is so small, it is only since we laser enthusiasts have got hold of it and bastardised it has it become and work entry level home c02 laser.. My bed is now 1 metre square to give an example.. I completely disagree however with your comments on honeycomb parts and thats probably because your extraction system system is not good enough for what you are cutting, you need to throw away the chine fan, install a proper suction outlet with a metal tube and install an larger fan that will suck all the smoke an air out of the chamber, there is a calculation that you can do to ensure that the air sucket in is equal to the air being sucked out, Its important that you work to this to clear the smoke, the honeycomb beds, are lighter, they allow the cut to properly cut and that is through the bottom of the wood, most people thing its on the top but its not it happens at the bottoms, if you do not have a honeycomb bed that smoke can not escape and will stain the wood, you also need a powerful air assist, this helps put out minute fires that can happen on the top and assists with the cut. Finally you should check your inlet outlet calculations to make sure you have enough coming in to let whats going out correctly, thats why their are holes all over the K40, they are air inlet holes. If you have patched them up or use a solid bed then you may well need a smoke assist as well from the front of the laser that pushes smoke to the rear and out of the outlet. If you take some time to look at larger commercial lasers you will see they all have honeycomb or raft beds to allow smoke to be sucked out of the bottom of the piece of wood you are cutting as that is when the cut occurs not the top of the wood. Have a play with a honey comb one and upgrade your extraction and youll see what I mean.

Rocking Sean. I did pretty much the same thing, but 3D printed little stands. So many complicate what really is ... simple. Good work.

mine is going back but slowly going to the right, and my home is to the left, i have cleaned end stop switch to see if its that but still not going home?

I'm thinking about buying/building a CNC router in the denver metro area, do you have any recommendations for local c-channel, or is online the best place?

Ur mod meets my 2 requirements...simple and inexpensive..too many people on youtube dont use common sense and spend too much time and money making crazy elaborate .ridiculous unnecessary mods...its funny.....i just bought an ebay k40 once i set it up im going to use ur bed idea....i also need to research how i csn use in garage winter...0deg f...without hsving wster freeze....antifreeze?...is the bed mod the only mod needed in order to engrave or cut?...ive seen some pretty crazy youtube videos pimping out the k40....my goal is not to pimp...my goal is to simply engrave or cut once in a while...hobby only...i actually use lego bricks as spacers standoffs...cheap and easy fast

Wow. I actually ordered and installed a new 1500mm ball screw, knowing that the original had a slight bow to it when it was installed. Bad wobble if I pushed it much beyond 250IPM. I was able to achieve well over 100IPM faster with the new screw, but only for a couple of days, then the wobble returned, mysteriously. In the process of troubleshooting the issue, I stumbled upon this video. Since I designed and built my machine, it was easier for me to introduce tension on the axis. What happened? when I loosened the BK12 mounting bolts and pulled on it to add tension, it came right off! The Jesus clip that was supposed to be holding that end of the screw fixed had fallen off, which likely led to the wobble in the first place. I replaced the clip, tightened her up and kaboom! No more wobble! Now I need to get better Jesus clips... Sincere thanks and best wishes!

Thanks. The clamp was a great idea. I just moved the gantry to the center of Y and then pulled the lead screw by hand to get a slight tension. You are right, btw: Workbee does supply longer lead screws in their V2, with 'Tingle Tension Extensions' is what they call them. I might order longer lead screws and put some push bearings on the outside. Regular bearings are not supposed to handle axial forces.

Just ordered the chain and both of your nozzles on Etsy. Looking forward to getting them in my machine. Could you tell me what size air hose these work with? And do you have a suggestion on a compressor? I have a small airbrush compressor I was planning on using.

Really like the adding of mdf to the base to help hold it flat, doesnt matter what you do with a bed if the base it sets on isnt anywhere near flat

The change of the bearing to the outside of the endplates is a good idea but with the tension applied to the roller bearing in the "wrong" direction will cause the roller bearing to fail quickly, it may be a advantage to place thrust bearing between the roller bearing and the collar. To minimise the dust to settle in the open thrust bearing i made large washers with dense felt that fit snugly over the thrust bearings

you know you mirrored the video ??

Very smart approach. I have a mpcnc but i just subbed to your channel. Thank you for sharing

I noticed that you have a Y and a Y2 connection. Are you using the A axis board for the second Y motor?

What could it be if I have the opposite problem? Instead of it moving back and not stopping, every time I turn it on it moves the gantry forward towards the front of the machine about 4 or 5 inches and then stops. No matter what position its in... Eventually it hits the limit at the front and grinds just like yours did, but at the front of the machine... Thanks

Thanks so much.

What is the max screw length that can be used in the C channel before the Flex becomes unstable? Using 3rd party screws can 2500mm length be acheived?