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26th August 2011, 08:49 AM #16Member
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We?
Speak for yourself, if I've got something in Imperial it's by accident, or it's an archaic hanger-on that doesn't matter much (router collets, camera tripod treads etc).
The world is metric, even the US. I thought a box of US-made powder was an odd weight at 44 pounds. Ah, 20kg.
Doing calculations with fractions annoys the hell out of me, it even annys that who actually like Imperial, hence decimal inches and the like.
I saw decimal yards once. Stupid system, good riddance.
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26th August 2011 08:49 AM # ADSGoogle Adsense Advertisement
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26th August 2011, 11:27 AM #17Dave J Guest
Yep, and we are still using imperial here like in timber lengths, 0.9 - 1.8 - 2.4 mtr etc.instead of 3 ft - 6 ft - 8 ft.
Dave
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26th August 2011, 12:11 PM #18Member
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26th August 2011, 01:40 PM #19Dave J Guest
From what I have noticed they are usually around 1820mm when you buy them.
Mike
Getting back on track, what DRO did you buy? Have you decided on where to put the cross slide scale yet?
With mine mounted on the tail stock side, I ran the cable underneath the and brought it out on the chuck side as you can see below.
So the tail stock doesn't come in contact with the scale, I used and extended screw on the tail stock wiper so it hits on the saddle before hand.
Dave
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26th August 2011, 01:50 PM #20Dave J Guest
The way wipers are a good idea to fit onto your lathe. I found that sometimes I would get a bit of swarf stuck under the tail stock and it marks the way when you clamp the tail stock tight. After fitting these I haven't had any trouble. They are just sheet metal folded up in the vice over a piece of flat bar and I drilled/ tapped the tail stock to take the M5 screws.
To drill the holes for the cross slide reader head, I removed the tail stock and used a spade bit extension to extend the drill bit to reach, but a purpose made extended holder could be machined up easy enough out of a piece of round bar. The spade bit extension hole was a bit big for my drill bit, so I used some aluminium can wrapped around it to shim it up.
Dave
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26th August 2011, 02:33 PM #21Intermediate Member
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Thanks Dave, that is the way I hope to do it too mate.
Ran into a problem though, my scale for the cross slide is too bloody long.
So, I have two options, send it back and wait for the correct size to arrive, whilst incurring all postage charges. Or, cut the scale to size. I have removed the end off one side of the scale and removed the rubber wipers. I am looking at the glass epoxied into place. This worries me, I am very nervous about cutting the glass scale.
Any tips on doing this is very welcome!
RE: Imperial V Metric, the work I am doing involves firearms. Imperial is here to stay for some time yet, especially in the firearms world.
Mike
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26th August 2011, 03:35 PM #22Dave J Guest
There are a few blokes that have cut them down, but I wouldn't worry about it unless it's really long. What size do you need and what size have you got?
I would just use a backing spar behind the scale for support if you have room and let the extra length hang out the back, as it wont hurt anything.
I want to extend my cross slide but have to make up a longer lead screw first, but then I run into the trouble of needing a longer scale.
Dave
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26th August 2011, 05:38 PM #23Intermediate Member
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Ah, sounds good Dave, I will go with that mate.
With a backing spur, would I need it to be dead flat or can I get away with a steel flat approx 5mm thick?
Cheers
Mike
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26th August 2011, 06:10 PM #24son of a blacksmith
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only last nightshift i asked a bloke to get me some m10 bolts, he returned with 3/8, says to me "same thing ain't it?", bless him the ignoramus but, if i wanted 3/8 i would had asked for them.
this nightshift coming im going to ask him to go to the store and ask the storeman for wooden welding rods, the ones used to weld wood.
might even tee it up with the store man and get him to give him a few lenghts of dowel. can't wait.
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26th August 2011, 06:47 PM #25Dave J Guest
I used a bit of aluminium flat bar I had here, but steel would be fine. On my mill I used steel angle to protect the scale on the front of the table, as can be seen in the link below. I mounted the scale strait onto the angle.
https://www.woodworkforums.com/f65/in...0-52-a-115786/
For the Z scale I used 75 x 10mm flat bar going down to hold the reader head and I mounted the scale just under the gap.
Dave
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26th August 2011, 08:29 PM #26Dave J Guest
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26th August 2011, 09:32 PM #27I break stuff...
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26th August 2011, 09:40 PM #28
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26th August 2011, 10:22 PM #29Member
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I've got two left-handed screwdrivers.
One is a ratchet drive that can only be use to tighten (I don't have the right-handed one to make the set), the other has the writing the correct way 'round.
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26th August 2011, 10:23 PM #30Member
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