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97504

Re: The lathe as a horizontal boring machine II

Alan , Noted thanks – that is certainly a very respectable run out for the 3 jaw chuck , Thanks for sharing your adventures , Carvel From:
Carvel Webb
May 20
#97504
 
97503

Re: The lathe as a horizontal boring machine II

Dusty – thanks My mind has now caught up with the circle part :>) Best regards, Carvel From: atlas_craftsman@yahoogroups.com
Carvel Webb
May 20
#97503
 
97502

Re: The lathe as a horizontal boring machine II

Yep 741 Scout I bored out to take GS 850 pistons that with a 45 Scout crank makes the poor little 30 CIDer into a reasonable 42 CID. Dusty On Sat, May 20, 2017
Dave Clements
May 20
#97502
 
97501

Re: The lathe as a horizontal boring machine II

Cool--I see jug from an old Indian there, love it. Bill Burky, Sr. ________________________________ From: atlas_craftsman@yahoogroups.com
William Burky
May 20
#97501
 
97500

Re: The lathe as a horizontal boring machine II

Carvel, The ream would still describe a circle at any point on it but the overall effect would be a cone. If I must use a ream that way I put it between
Dave Clements
May 20
#97500
 
97499

Re: The lathe as a horizontal boring machine II

That should read gunsmithing. iOS always thinks it's smarter or it has a liberal bias, Charles ... That should read gunsmithing. iOS always thinks it's
Charles
May 20
#97499
 
97498

Re: The lathe as a horizontal boring machine II

That's actually not exactly true for a reamer. The path of the cutter tip of the cutter in a boring bar with a single point cutter would in fact be circular.
wa5cab
May 20
#97498
 
97497

Re: The lathe as a horizontal boring machine II

Doesn't matter whether you run the reamer in the tailstock or the headstock, this is always an issue, and why they make floating reamer holders.  They also
Charles
May 20
#97497
 
97496

Re: The lathe as a horizontal boring machine II

Carvel: It's quite possible the reamer was running out but as already pointed out by Dusty the run out would describe a circular path. The two holes I reamed
alan.suttie
May 20
#97496
 
97495

Re: The lathe as a horizontal boring machine II

Alan, Thanks for the pictures, I will definitely be doing something along those lines in the future! If you ever come across a Trav-A-Dial at an affordable
ksierens
May 20
#97495
 
97494

Re: The lathe as a horizontal boring machine II

Hi Dusty , Noted thanks , but I am trying to picture the second case here where Alan has a reamer mounted in the 3 jaw chuck . If the chuck had any appreciable
Carvel Webb
May 20
#97494
 
97493

Re: The lathe as a horizontal boring machine II

Carvel, When you are holding a tool the runout doesn't matter unless something shifts and it changes. If you are turning the work it is very important. My
Dave Clements
May 20
#97493
 
97492

Re: The lathe as a horizontal boring machine II [2 Attachments]

Alan, Nice illustrations , thanks But I am curious as to how you have managed to account for the inherent runout of a 3 jaw chuck – both with this set up as
Carvel Webb
May 20
#97492
 
97491

Re: The lathe as a horizontal boring machine II

lets try that again On Fri, May 19, 2017 at 9:07 PM, Dave Clements davidcclements@...
Dave Clements
May 19
#97491
 
97490

Re: The lathe as a horizontal boring machine II [2 Attachments]

I have used this fixture for 3 or 4 years to bore motorcycle cylinders. It keeps my blood pressure way lower to not have to deal with the local so called
Dave Clements
May 19
#97490
 
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