Thread: 'Otter'. Build log.
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24-10-2018 #21
Ah well I'm worrying for nothing then. I'll keep these on the shelf until the physical build is done. Still waiting for the steel to arrive, then hopefully I will have some idea what I'm doing with it.
With the top of the steel box section being the bed for my linear rails, would skimming a very tiny amount (possibly 0.1 mm or less) from them with an end mill give a flat enough surface to mount on so the epoxy can be skipped altogether?
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24-10-2018 #22
I am not being disrespectfull but i think you really need to take the time to read some of the build logs, these will give you an idea of the various build methods and proceedures for machine alignment.
Regards
Mike
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24-10-2018 #23
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24-10-2018 #24
Yes I have been looking at a few and there seem to be some discrepancies between them, hence my suggestion of machining the top surface. I will continue to take a look through more and see if there's anything I'm not accounting for. Thanks again for the pointers. Any help is appreciated as always :-)
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24-10-2018 #25
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25-10-2018 #26
My 1.8m long box sections had a dip in the middle of about 2mm one side and 3mm the other. Tricky to machine flat when the wall thickness is 3mm to start with! However, I don't know if this was "as supplied" or welding distortion but it is why I went the epoxy levelling route. Plenty of discussion on the forum about that. I did add doubler strips inside the box section to give a better bite for the rail holddown bolts
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25-10-2018 #27
Hi Buddy
Have a read of this,
http://www.mycncuk.com/threads/6546-...o-straight-%29
Regards
Mike
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