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79916
Jim
wb5kye100
Dec 1, 2012 1:44 pm
I thought someone on the list may provide some guidance. A close friend (retired biology teacher aka very limited $) has asked me if I could help him repair...
79917
Donald-Gritti
g52ss
Dec 1, 2012 1:56 pm
 Hi Jim  My machinist skills probably would not let me succeed making the rack you seek either. Would try to help find the gear you are looking for. Can...
79918
Jim
wb5kye100
Dec 1, 2012 2:11 pm
Thanks, Don. I will take the gear and make some measurements today. Take care - Jim...
79919
cliveadams23@...
cliveadams79
Dec 1, 2012 2:19 pm
If it's only that size I'd be inclined to make it with hand tools - it's a good exercise in setting out and filing. Failing that find someone with a shaper...
79920
Charles
xlch58...
Dec 1, 2012 2:54 pm
Coming from blacksmithing and poverty to the machining world thirty years ago, I tend to reach for my chisels and files first and consider myself adept, but if...
79921
Jim Ash
thissucks0914
Dec 1, 2012 3:14 pm
I can't claim to have done this before, so it's all theory. But it struck me that you could grind a single-point tool to match the existing rack profile...
79922
cliveadams23@...
cliveadams79
Dec 1, 2012 3:25 pm
Maybe I read the question wrong, or maybe I just got hold of the wrong end of the stick . . .? I thought the OP wanted to make the rack, not the pinion. That...
79923
Carl Hollopeter
chollo...
Dec 1, 2012 3:37 pm
Jim, Take a look at these guys, they may have what you need. https://sdp-si.com/eStore/Direct.asp?CP=Index.htm I use them a lot for supplies as I build rack...
79924
mmcglensey
Dec 1, 2012 5:46 pm
Guys, I have an Atlas/Craftsman 101-07301 6" lathe. I got if from a friend who did care for it. I changed the gearing to allow me to cut a 10 tpi thread....
79925
Don
g52ss
Dec 1, 2012 6:55 pm
Hi All Need the small plunger #9-60 & spring #9-61 that locate the gear reversing lever on the gear box. Would any of you sell me those parts? Of course I'd...
79926
gene isley
gene_isley_7
Dec 1, 2012 7:59 pm
machinistweb.com/forum/showthread.php?t=993  Hi group  I was looking at the posting reguarding problems with a quick change gear box on a atlas lathe. I...
79927
Jon Elson
jmelson2
Dec 1, 2012 8:05 pm
... First suspect is the right-end bearing support for the leadscrew. It is possible for the locking nuts to bind up and jam the shaft. Also, if this has a...
79928
EdwinB
n5kzw
Dec 1, 2012 8:33 pm
What brand of microscope?. I just accidentally placed a bid on a "parts only" Carlsan, and it turns out that it doesn't have the part I need. If I win, I...
79929
Charles
xlch58...
Dec 1, 2012 9:10 pm
It is probably me, but as I recall, it is a bit trickier in that your if while the rack can be angled in relation to the cutter path, the cutter face has to be...
79930
L. Garlinghouse
garlinghouseles
Dec 2, 2012 12:31 am
Jim Ash's input is included below. I think it has merit and worth at least thinking it thru. On the movement of the carriage for the purpose of indexing the...
79931
Bruce .
freemab222@...
Dec 2, 2012 4:12 am
If you can measure the gear and pressure angle, you MIGHT luck out and find one here: http://www.mcmaster.com/#racks-and-pinions/=ketgeu If I were doing this...
79932
anthrhodes@...
anthrhodes
Dec 2, 2012 5:23 am
Marty, In my opinion the binding is caused by too much pinch on the left leadscrew bearing when tightening the banjo pinch bolt. The bearing is just zamac and...
79933
anthrhodes@...
anthrhodes
Dec 2, 2012 6:33 am
If the microscope in question isn't ancient there is a substantial likelihood that the gears are metric. As there is no obvious reason to use a non standard...
79934
fujiyoshis
Dec 2, 2012 6:40 am
Anyone have an extra leadscrew end bracket for a 12 inch Craftsman Commercial lathe? steve...
79935
Guenther Paul
paulguenter...
Dec 2, 2012 9:01 am
Steve You can make you a end bracket. Make from steel with a oil lite bushing in it and a grease fitting in the center. You will never have a problem with it...
79936
Carl Hollopeter
chollo...
Dec 2, 2012 4:04 pm
Anthony, Unless I mis-read the original post, the spur gear is fine, he needed a source for the rack, which may possibly be obtained from www.mcmastercarr.com...
79937
PaulH
paul99rt
Dec 2, 2012 6:25 pm
Sold........................
79938
JeffersonHouse
jeffersonhou...
Dec 2, 2012 9:59 pm
Paul is right. We made one for the shop ourselves, only difference we used a Brass block to start with. It's lasted over 25 years....
79939
Tom Popovic
KI3R
Dec 2, 2012 10:42 pm
Hello Mike .... Just wanted to say thanks for the info ... I did what you had reccomended and was successful in getting the coupler off. I used a...
79940
Bob Robinson
wvrangerbob
Dec 3, 2012 1:05 am
First off, I wouldn’t rely on a slightly loose race (or cup) holding by end pressure on the bearing. it might if the load is steady with no vibration. But...
79941
Ken Harrington
petzlglyph
Dec 3, 2012 5:07 pm
Hello all, I'm new to the group and have been enjoying the info on the site. I recently got an Atlas 101.07301 that had sat in a old shop for some thirty years...
79942
Jon Elson
jmelson2
Dec 3, 2012 6:12 pm
... Yes, due to the design of the Atlas, the screw gets chips all over it. Every once in a while, you need to run the lathe and use a screwdriver wrapped with...
79943
Brucekareen@...
ebrucehunter
Dec 3, 2012 8:34 pm
You likely realize by now that the weak construction of the bearing support was intentional. It was designed to serve as a mechanical fuse should the...
79944
Guenther Paul
paulguenter...
Dec 3, 2012 8:40 pm
Its not a break away or safety. Its just cheap z-mack metal  GP ________________________________ From: "Brucekareen@..." <Brucekareen@...> To:...
