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  #21  
Old 12-26-2015, 09:19 AM
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digger doug digger doug is offline
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What Keith says 110%

When I bought my estate sale project, the guy had a set in there
(I have them filed away) and have since rooted all over the
MechMate forums and despite the complainers feel it is
a very good design.

Complaints come from people wanting to push the envelope,
But don't want to take the lead themselves.

Every design is a compromise, but the MechMate fills the
bill 99% of the time.
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  #22  
Old 12-30-2015, 07:14 AM
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Alchemist, looking at what you are doing, the thought crosses my mind that your gantry may be a tad heavy. There is a inertia issue on heavy gantries. If you are strictly using this as a router, I see no problem. In fact heavy is good to create a smooth cut. The fast reversals of torch based CNC tend to have lag issues with inertia if present.

And Kieth, where is part 2?
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  #23  
Old 12-30-2015, 03:03 PM
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Quote:
Originally Posted by Ironman View Post
Alchemist, looking at what you are doing, the thought crosses my mind that your gantry may be a tad heavy. There is a inertia issue on heavy gantries. If you are strictly using this as a router, I see no problem. In fact heavy is good to create a smooth cut. The fast reversals of torch based CNC tend to have lag issues with inertia if present.

And Kieth, where is part 2?
It's just for a router and maybe some engraving. I don't plan on it going back and forth very quickly. I'm not ready for a torch yet, I don't have a shop yet. But I will make one one day.
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  #24  
Old 12-30-2016, 04:34 PM
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I'm back at it

1 A mock up of how the drivescrew bearing seal and sprocket will work

2 Making an idler to take up the chain slack

3 End view with the motor, idler, and two drive screws with the chain

4 Another angle of the drive setup

5 drive screw and sprocket. I have a 3/16 woodruff key for the sprocked and a nut with setscrews to tak the load. There is a sleeve between the sprocket and bearing for the seal to ride on.
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  #25  
Old 12-30-2016, 04:38 PM
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Whats up with the side ways pics lately? what am I doing wrong
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  #26  
Old 12-30-2016, 11:00 PM
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Quote:
Originally Posted by alchemist View Post
Whats up with the side ways pics lately? what am I doing wrong
posting from your phone?

I asked markttu about that very thing the other day. He said that the iPhone has only two position sensors, the same ones it uses for the compass and the level.
He said that when you take a picture with your phone, decide in advance which orientation you want the picture to be in when you view it. Hold that side of your phone up in the vertical position for a few seconds to allow the gps sensors in the phone to register. This is especially critical when you're taking a "flat" picture, where the subject is lying flat on a table or bench, for instance.

The subject came up because he was taking pictures of something on my work bench. The first came out rotated after he took it. He deleted that one and "oriented" his phone. The next one displayed correctly.

YMMV.

I do not attempt to post pictures from my phone. I still load them to my desktop using Dropbox, process them through Irfanview and rotate, crop or brighten them as needed.
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  #27  
Old 12-30-2016, 11:46 PM
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Quote:
Originally Posted by Ironman View Post
...And Kieth, where is part 2?
A little late but I just realized that I never posted the other two sections...here they are...
Attached Files
File Type: pdf Part 2.pdf (2.15 MB, 103 views)
File Type: pdf Part 3.pdf (2.47 MB, 89 views)
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Measure twice and cut once...or...wait, was that the other way around?
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  #28  
Old 12-30-2016, 11:58 PM
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And here are the support files...dxf drawings of all the laser cut parts and a couple of spreadsheets...
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File Type: zip ProfilesBends30Jun08.zip (920.4 KB, 109 views)
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Measure twice and cut once...or...wait, was that the other way around?
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  #29  
Old 12-31-2016, 11:06 AM
Lew Hartswick Lew Hartswick is offline
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On this orientation of pix subject. If they are sidewise I usually just ignore the rest of them . My neck says "fergetit". This whole cursed thing of phones being used for pictures is a giant PITA . :-(
...lew...
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  #30  
Old 12-31-2016, 03:37 PM
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Quote:
Originally Posted by cutter View Post
posting from your phone?

I asked markttu about that very thing the other day. He said that the iPhone has only two position sensors, the same ones it uses for the compass and the level.
He said that when you take a picture with your phone, decide in advance which orientation you want the picture to be in when you view it. Hold that side of your phone up in the vertical position for a few seconds to allow the gps sensors in the phone to register. This is especially critical when you're taking a "flat" picture, where the subject is lying flat on a table or bench, for instance.

The subject came up because he was taking pictures of something on my work bench. The first came out rotated after he took it. He deleted that one and "oriented" his phone. The next one displayed correctly.

YMMV.

I do not attempt to post pictures from my phone. I still load them to my desktop using Dropbox, process them through Irfanview and rotate, crop or brighten them as needed.

Well I'll be damn. I would have never guessed that. I will use my regular camera from now on.
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