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Member postings for harry marr

Here is a list of all the postings harry marr has made in our forums. Click on a thread name to jump to the thread.

Thread: machining spindle taper in situ?
30/09/2013 16:07:14

Hi all im after some expert advicelaugh Ive done basic machining as part of my RnD role at work for a few years now so i have basic skills but im certainly not a machinist! I recently rescued a mk1 drummond lathe and have been busy rebuilding it! I just finished scraping the cross slide in when i realised a slight oversight... the spindle is not original (although appears very accurate) and has no spindle nose taper!!

What are my options for boring the taper? bearing in mind the lathe has been stripped so the tail stock is nowere near centered and the only chuck with the lathe is a 3 jaw which doesnt look to brilliant!

Due to the clean room nature at work i cant take the spindle in use there machines so do i have any chance of doing it in situ?

My initial thoughts were step drilling and boring it acceptable or not?

Any thoughts?

Thread: drummond vs myford parts
03/09/2011 20:26:39
Evening all, Ive just purchased a new lathe and im 99.999999% sure its a drummond flat bed more than likely b type (looks like a spitting image of 1912-1925 model) Im trying to source a fixed steady for the lathe and a few other bits and im wondering if myford lathe parts will fit could any myford owners get me measurements of bed slideway dimensions and distances apart etc?
 
Much appreciated
harry marr
Thread: What is it? ultra mini lathe
30/08/2011 18:04:23
Forgot the pictures!
 
http://i47.photobucket.com/albums/f164/boots_n_braces/037.jpg
http://i47.photobucket.com/albums/f164/boots_n_braces/036.jpg
http://i47.photobucket.com/albums/f164/boots_n_braces/032.jpg
30/08/2011 18:02:24
Hi all, got these in a semi workshop clearance recently one im pretty sure is a drill sharpening guide but not sure by who or when? doesnt appear to old
 
The tiny winy hand size lathe im really interested in though, it has a small lion head marking at one end of the guide way and the whole lot unhinges from the base?? any info greatly recieved
 
Harry
Thread: Making simple machine tools by hand
20/08/2011 20:10:56
Im glad its not just me! Im starting out on building a lathe at the minute and wondering if id taken on to much so good to see others have coped! how do you find their accuracy?
Ive previously built a desktop cnc mill (proper xy table not gantry style) for milling pcb's.
The trouble i find is getting hold of things like babbitt metal is so much harder than it used to be!
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