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Well I abandoned this project. I've found recently my almost fires have been junk on the knife blade edges that catches fire with prolonged exposure to a cutting flare up. Then it drips on to waste...

Hi all,

This is just a quick build thread for a mod I've just done on my Safety speed cut H5.

We cut plastic and some plastics (lexan and abs) are very jumpy especially at the start and end of...

I find it can vary from brand to brand. I have a plexiglas brand extruded that is fairly sticky and some imported stuff that is less so. But never so sticky as to stop using it. I am pretty sure...

I've just got a regular but I should get a co2 as the regular was a hell of a mess the only time I needed it (and that was just a touch - not a full empty).

And in case any one is wondering, I...

$10each based on $90/hour and 1 hour each way for pick up and drop off (if they want me to do it rather than a shipping company I round up). Loading up and down is just part of the business if its...

Well - that's the reverse of what mine seemed to do (it would show more life on a test and decrease on run time) but that said, I'd get both a power supply and a tube. The power supplies seem to be...

OK - despite really not as nice packing (Box with foam wrapped on outside of cardboard box, tube wrapped in foam inside same cardboard box) the replacement tube made it and is installed. Its the end...

I know on mine I would always have some issues until I finally changed the height of the first mirror and leveled the tube slightly so that everything was on the same plane. Basically my centre on...

Just an update. You may have seen my other thread about issues with my old tube and then with my new tube. Needless to say this project is on hold until I am am capable of starting a fire with the...

New tube is being sent by EFR (or vendor but OK'd by EFR). My guess is they didn't like what they saw in the 2 video's taken a week apart (not much to see in the second one) because it was pretty...

I've now further tested to ensure the control signal is OK and while it reads a little lower than I expected it is consistent with our other operating machine and does scale appropriate to the power...

Ok did the test fire anyhow. No glow, no beam, no love...

The ma flickers around 0 but otherwise no sign of life. I think Elvis has left the building.

Ok so I sheathed the High Voltage wire in Silicone tube and overlapped (not a lot) the splices in larger silicone tube and then taped. I had the water cooled nicely and checked for back mirror...

Well I'm encouraged we the consensus so far isn't that the tube toast...

Until tomorrow when the stores open.

Oh and no bubble visible in any way shape or form and rotated both ways (though I...

So take it out of the mounts and raise it 45deg up front and then back? or rotate in the mounts (which I have done)?

Well I'll try the silicon first but is it not odd that I'd leak current on a Tuesday but not the prior week? Seems like a lot of leakage without an arc?

If I get a new line, I'll still have to...

So this is how the factory/vendor had the HV wire and low voltage wire connected. Both need splicing to the old lines and then another splice for each near the power supply (HV to bypass the now...

Hi Dave,

Yes I had an extension when I was using the reci V8 tube (sorry said z8 before) so this one fits better but I have to cover up the hole eventually. The top cover doesn't shut anyhow as...

Well I for one would not order a Shenhui again. Maybe its just bad luck but too many issues and also been looking at threads where GWeike machines have a 'toolkit' with useful diagnostic stuff (like...

Also a link to video if this works...

https://goo.gl/photos/P1FjQJcYaxoNbEAq9

Not sure which mirror end you mean. The front looks fine (clear and perfect really) and the back is opaque. Both look fine but there are some epoxy runs across the back of the HV side end mirror...

Hi Guys,

OK in my quest to get a decent laser cutter, I decided I had to try a new tube so I took the plunge and got a EFR F6 from an ebay seller. The tube packing was excellent (crate/tight...

Ok on this last issue it seems the power supply was at fault. I had another issue (laser did not go next day) and so swapped power supply and found it under the board where it was arcing to the...

OK new lead on this issue.

First - I found the arc that I heard - not the emergency switch this time but under the board on the power supply. Not sure what would have caused that but clear...

We will generally just heat and only groove if precise bending is required as scoring/grooving will significantly weaken the material - mainly due to thickness but you also introduce stress and...