From: Snag_one@msn.com   
      
   On 6/28/2025 4:46 PM, Bob La Londe wrote:   
   > On 6/28/2025 2:19 PM, Jim Wilkins wrote:   
   >> "Bob La Londe"  wrote in message news:103pkof$12a0h$1@dont-email.me...   
   >>   
   >> Another trick if you are using HSS, or if you are very careful using   
   >> *carbide is to use a precision dowel pin, gage pin, shank of an end   
   >> mill, 123 block, gage block, etc.  Start with your cutter slightly less   
   >> than your precision dimension fromt he stock, and slowly move it until   
   >> your gage just slides between.  This is "maybe" more accurate than   
   >> paper, but I treat it the same since the preload of the lead screws is   
   >> in the opposite direction.   
   >>   
   >> I prefer an edge finder, a tool height setter, and pre-measured tool   
   >> heights, but you never know what kind of situation you may find yourself   
   >> in.   
   >>   
   >> * If using a sharp carbide cutter you have to take a lot of care to make   
   >> sure you do not chip a cutting edge using the slip gage method.   
   >> Bob La Londe   
   >> -----------------------------------   
   >>   
   >> Good advice.   
   >>   
   >> I use the items you mentioned and drill shanks as spacers to set the   
   >> lathe and mill stops for depth of cut when the tool contacts the   
   >> original surface if caliper jaws won't fit. Like hobby machines, my   
   >> 1960's antiques don't have DROs.   
   >>   
   >   
   >   
   > Plenty of "hobby" machines do have DROs.  Just ask anybody who is using   
   > a high price "pro" machine that belongs to their boss's bank.  LOL  They   
   > will tell you all those import machines are hobby junk.   
   >   
   > DROs are fairly cheap, and available for almost anything these days, but   
   > many of the "better" prosumer/hobby importers offer preinstalled DROs as   
   > an option.   
   >   
   > There are even modestly priced DROs with bluetooth interface for a   
   > tablet or maybe a cell phone.  I'm not sure there.  I like my DRO   
   > hanging off of a big heavy steel arm.   
   >   
   >   
      
     I recently upgraded from a Shumatech DRO350 to a real DRO with optical   
   scales instead of capacitive on my bench top mill  . It hangs from a   
   modestly sized piece of steel square tube . I briefly considered putting   
   the Shumatech unit on my lathe but saw no particular advantage for doing   
   so .   
   --   
   Snag   
   We live in a time where intelligent people   
   are being silenced so that   
   stupid people won't be offended.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)