Search found 66 matches

by John Mulhern
Sun Jan 22, 2017 3:29 pm
Forum: Reeds and Pipemaking
Topic: A good metal lathe...
Replies: 18
Views: 16840

Re: A good metal lathe...

That kinda depends on what you're making. Pipes? You should do fine with just a wood lathe. It'd be a lot cheaper, too. I don't know where you're located geographically, but Craigslist is always a good starting point to look for machinery. Lathes are intended to be durable items, but some of 'em sta...
by John Mulhern
Sat Apr 30, 2016 8:51 pm
Forum: Reeds and Pipemaking
Topic: for those who want to build a lathe
Replies: 2
Views: 1742

Re: for those who want to build a lathe

Concrete bodied metal cutting lathe. Waaay cool! :)
by John Mulhern
Sat Apr 30, 2016 8:41 pm
Forum: Reeds and Pipemaking
Topic: what about this kind of reamer
Replies: 2
Views: 2155

Re: what about this kind of reamer

It wouldn't be very precise. That video is about reaming cork handles on fishing poles, using abrasive paper glued onto a mandrel. It may be that machining cork with conventional HSS tooling has inherent difficulty, like machining soft rubber, due to its softness...hence the sandpaper. Dunno, I've n...
by John Mulhern
Fri Dec 20, 2013 10:14 am
Forum: Reeds and Pipemaking
Topic: tapers used in a chanter bore
Replies: 4
Views: 4136

Re: tapers used in a chanter bore

Hi Philipp. ...Of course, the ratio is not 1:1 and the bore diameter on the Y-axis is exaggerated. If it were so, I don't think anyone would be able to see any taper changes. Yup, exactly what I meant! Graphing a bore on an X & Y Cartesian co-ordinate system won't give a true shape representation un...
by John Mulhern
Wed Dec 18, 2013 12:47 pm
Forum: Reeds and Pipemaking
Topic: tapers used in a chanter bore
Replies: 4
Views: 4136

Re: tapers used in a chanter bore

This was an uilleann chanter bore graph, throat-to-bell? If so, your length versus diameter axes aren't proportional, making it difficult to tell what's going on. Is it possible to draw it again in a CAD program keeping all units scaled the same? Yes, from your graph much of that upper bore shape co...
by John Mulhern
Mon Nov 19, 2012 11:56 am
Forum: Uilleann Pipes General Discussion
Topic: MY APOLOGIES
Replies: 5
Views: 4350

Re: MY APOLOGIES

Thanks for your efforts, Jeff. I honestly don't understand the motivations of the Chinese spammers, nor do I understand those of Yahoo's omnipresent bots.
Someone must be making a Yuan somewhere, but I don't see how. It all seems destructive & in vain.
by John Mulhern
Tue Nov 13, 2012 11:59 am
Forum: Uilleann Pipes General Discussion
Topic: Chiff & Fipp
Replies: 6
Views: 5096

Re: Chiff & Fipp

I think the Canadian moose-powered generator is down.
Darn Canadian moose browse shortage.

I know, I know...please behave, folks. :lol:
by John Mulhern
Sun Dec 11, 2011 2:31 pm
Forum: Reeds and Pipemaking
Topic: key lengths
Replies: 2
Views: 1793

Re: key lengths

I've not seen Pat Sky's book. Does it have any top view pictures or drawings of the regulator keys you're interested in? If it does, scan in the image, convert it to a .dwg file using a raster to vector program like WinTopo (free download), export that to your CAD program, and clean it up & redraw t...
by John Mulhern
Wed Aug 17, 2011 6:13 pm
Forum: Reeds and Pipemaking
Topic: Uilleann Reamer making issues
Replies: 13
Views: 8734

Re: Uilleann Reamer making issues

Esteban, the total indicator runout (TIR) mismatch is so small from step to step, that you can discount it as affecting the concentricity of your reamer blank. It's really not necessary to worry about it, unless you already own a collet set up for your lathe, and wish to achieve a tool & cutter grin...
by John Mulhern
Fri Dec 03, 2010 1:15 pm
Forum: Reeds and Pipemaking
Topic: Accuracy of vernier
Replies: 6
Views: 1910

Re: Accuracy of vernier

Actually, vernier calipers were always thought of (in the pre-digital age of dinosaurs) as being more reliable than dial calipers...which have problems of their own (skipping teeth on the rack). One of my machining mentors told me 35 years ago that when he worked for IBM, dial calipers weren't allow...
by John Mulhern
Tue Feb 23, 2010 8:31 pm
Forum: Reeds and Pipemaking
Topic: Mill tooling for reamers?
Replies: 44
Views: 10688

Re: Mill tooling for reamers?

I think what J-dub was referring to earlier is "climb cutting" versus "conventional milling". Climb cutting is notoriously problematic on small mills like ours, due to the sloppy fit inherent in their acme feed screws & poorly adjusted gibs. Always conventional mill if you can. Sound machining princ...
by John Mulhern
Wed Feb 10, 2010 9:20 am
Forum: Reeds and Pipemaking
Topic: Mill tooling for reamers?
Replies: 44
Views: 10688

Re: Mill tooling for reamers?

Harlow, the 3" face mill that came with my mill drill uses 4 brazed carbide lathe tools. Even with razor sharp, 0. radius tips and a rigid (non skinny reamer-blank) workpiece...it chatters horribly. You didn't specify what your mill is. If you've got a Bridgeport, or other full sized machine, and an...
by John Mulhern
Tue Feb 09, 2010 10:08 am
Forum: Reeds and Pipemaking
Topic: Mill tooling for reamers?
Replies: 44
Views: 10688

Re: Mill tooling for reamers?

Is a face mill or a endmill better for this task? Any suggestions for endmill size needed? I'm thinking 3/8" should work. In my opinion, you want the smallest diameter cutter necessary to do the job. A small cutter running at a higher RPM is less prone to trigger chatter in a workpiece than a large...
by John Mulhern
Sat Jan 23, 2010 2:27 pm
Forum: Reeds and Pipemaking
Topic: Artificial ivory repair
Replies: 1
Views: 1241

Artificial ivory repair

Hiya. My Sloan chanter had one of its mounts broken a few days ago presumably banging around inside the case (I'm assuming it's not our sudden Pacific storm humidity expanding wood). It's a clean break into two pieces & pops back together nicely. I'm guessing a small bit of super glue with a little ...
by John Mulhern
Sat Nov 28, 2009 10:33 am
Forum: Reeds and Pipemaking
Topic: Metal lathe woes
Replies: 10
Views: 4372

Re: Metal lathe woes

http://www.americanmachinetools.com/images/Fig7-5.gif Bob, buy a H.S.S. blank to fit your tool post & grind it to a shape similar to the upper right one in this chart. This will suffice for 99% of your turning. I'm not a big fan of brazed carbide, but an AR-6 (3/8" sq. right hand...I think) is anot...