mikegrundvig wrote:I'm very glad to hear it's working great. I'm going to take a partial assit on this one with my comment " Do you know you are getting the power you expect?"
TLHarrell wrote:I like your idea of including all the additional support equipment inside the case. It's looking good, even in yellow (not really my favorite color). Too bad the magnets didn't work out.
TLHarrell wrote:How's alignment and accuracy working out for you on the 4' axis? Any issues, or anything you would plan differently?
Mike wrote:Any details on the magnets? I'm curious to know where the problem was.
I've been following your build with great interest for quite a while now as it's the most similar to my intended build on this forum. Care to elaborate on your table/focus comment in more detail? I'm currently debating how I want my table movement to work and so any advice from someone who has "been there, done that" would be greatly appreciated.IGull wrote:I'm not sure that I would bother with the autofocus and Z lift again - it would be a whole lot easier and cheaper to just have a solid fixed bed with a range of positions the bed could be put in - I may yet retrofit this idea.
mikegrundvig wrote:I've been following your build with great interest for quite a while now as it's the most similar to my intended build on this forum. Care to elaborate on your table/focus comment in more detail? I'm currently debating how I want my table movement to work and so any advice from someone who has "been there, done that" would be greatly appreciated.
Heh, I'm debating with myself pretty heavily on the gantry tube system. Too many of the large commercial lasers do it for me to disregard the design out of hand and it actually makes for a simpler overall structure as you don't have as many structural members critical in the alignment. Running the HV wire doesn't worry me, as I'm just going to use much higher grade than the machine calls for. My only real concern is running water to the tube as it will need to flex frequently. The weight of the gantry even with everything on it isn't much of a concern at all. I'm using 36v steppers with higher-end drivers than most here so I'm not at all worried about either the power or speed problems.iGull wrote:You definitely don't want my advice on a gantry system 'though - moving glass/gas/water/25Kv/sensor cables and air is a recipe for trouble - go for it 'though - no gain without pain as they say
mikegrundvig wrote:Thanks, that table discussion was very helpful. I think I'm going to build the table exactly as you suggested. Probably using something like these to lock it into position.
I'm building my own optics carriers for a variety of reasons so I'll just add this to the mix. This is also something common on the larger format machines.iGull wrote:This is all assuming that you have an adjustable optic tube for the laser head of course
Sorry, not near enough doubt to really change anything. With the gantry-mounted-tube being so common on large lasers, I'm sticking with it. As best I can tell, when you get into the 4' stuff for industrial use the flying optics become less common.iGull wrote:Ok on the gantry, I can see some indecision creeping in there - hold on to that thought
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