New G0602 Setup

[Paul Fithian]

Curious why you chose the chuck side to mount the scale?

To enable access to the gib screws and carriage lock, figuring I would access these more than the follow rest.

 

[verbotenwhisky]

To enable access to the gib screws and carriage lock, figuring I would access these more than the follow rest.

It isn't the lack of the follow rest that would mess me up, it's the reach of the tool rest when I need to work a project which is too large to get the cross slide under.

or

 

[Red96]

I agree with you on the follow rest - I have yet to find a need for mine after a couple of years of lathe use.

At what diameter of stock do the jaws start to interfere with the scale? Pictures make it look like about 2" dia. stock is where jaws will get close.



Not that your concerns regarding the carriage lock and gib adjusters are not valid - they totally are. I'm trying to resolve those issues on my lathe too, in prep for a DRO install. I've figured out how to deal with the carriage lock, but still noodling on a solution for the gib adjusters. Appreciate the dialog. (Not a Grizzly, but same bed casting & similar carriage casting)

 

[verbotenwhisky]

I agree with you on the follow rest - I have yet to find a need for mine after a couple of years of lathe use.

At what diameter of stock do the jaws start to interfere with the scale? Pictures make it look like about 2" dia. stock is where jaws will get close.

Not that your concerns regarding the carriage lock and gib adjusters are not valid - they totally are. I'm trying to resolve those issues on my lathe too, in prep for a DRO install. I've figured out how to deal with the carriage lock, but still noodling on a solution for the gib adjusters. Appreciate the dialog. (Not a Grizzly, but same bed casting & similar carriage casting)

This was my solution for the lock, I replaced the 4mm long screw with a 14mm screw so I could get the wrench to it and a 1/4 turn locks it, the hole you see in the bottom is to allow any lubricants and coolants to drain. It does capture cuttings but that isn't a big deal for me, I have a shop vac that lives close to the machine, just have to be mindful of where the tool is to avoid sucking it up.

 

[RJSakowski]

There are two reasons why I chose to mount my scale on the right rather than the left.

1. It reduces the work envelope. Specifically, the swing of the lathe is reduced by almost 2". This can be worked around by setting the compound parallel or nearly parallel to the spindle axis but that creates a significant amount of overhang which would decrease rigidity and could cause damage in the event of a crash. However, how often would you wan to turn something more than 8" in diameter?

2. It increases the possibility of damage or contamination.

Installing a DRO on a small lathe is always a problem and compromises usually need to be made. When I did mine, slim scales weren't available so I went with iGaging scales and reduced resolution.

My install lost only 1" of tailstock movement and that only for certain cases. Gib adjustment is an infrequent event. I provided for access to the gib screws although I do have to remove the scale to make an adjustment. I still have access to the carriage lock but haven't a good solution for locking the cross slide. Ideally this would be done by tightening a screw against the gib so so contact with the opposite dovetail is maintained.

Here is the writeup on my install. https://www.hobby-machinist.com/threads/another-lathe-dro-install.34106/

 

[Paul Fithian]

I weighed that chuck clearance issue as one of the compromises on the install. Figured I could remove the scale if I got into that situation. Looks like a stock of ~ 2" diameter is the most it can handle:


For sure installation of a scale on the G0602 cross slide is a comprimise, I haven't seen one mounted on the gib adjusting screw side that I liked.

 

[verbotenwhisky]

There are two reasons why I chose to mount my scale on the right rather than the left.

1. It reduces the work envelope. Specifically, the swing of the lathe is reduced by almost 2". This can be worked around by setting the compound parallel or nearly parallel to the spindle axis but that creates a significant amount of overhang which would decrease rigidity and could cause damage in the event of a crash. However, how often would you wan to turn something more than 8" in diameter?

2. It increases the possibility of damage or contamination.

Installing a DRO on a small lathe is always a problem and compromises usually need to be made. When I did mine, slim scales weren't available so I went with iGaging scales and reduced resolution.

My install lost only 1" of tailstock movement and that only for certain cases. Gib adjustment is an infrequent event. I provided for access to the gib screws although I do have to remove the scale to make an adjustment. I still have access to the carriage lock but haven't a good solution for locking the cross slide. Ideally this would be done by tightening a screw against the gib so so contact with the opposite dovetail is maintained.

Here is the writeup on my install. https://www.hobby-machinist.com/threads/another-lathe-dro-install.34106/

Both of the videos I shared above are of my machine one is turning a 9.5"OD chunk of 1045 down for a chuck back plate and the other is turning down and boring out a piece of 304 8" S/80 seamless pipe down to make vanes out of it, it was a paying job (8" pipe is actually 8.625"OD). I have worked in front of the cross slide n a number of projects, it you look at the pipe video you'll see the tool holder extension I machined to give me a reach out to 4.5" beyond the edge of the cross slide, I started off trying to use a 1" boring bar but rigidity was an issue, the extension had no such problems.

 

[verbotenwhisky]

I weighed that chuck clearance issue as one of the compromises on the install. Figured I could remove the scale if I got into that situation. Looks like a stock of ~ 2" diameter is the most it can handle:
View attachment 507849

For sure installation of a scale on the G0602 cross slide is a comprimise, I haven't seen one mounted on the gib adjusting screw side that I liked.

Ohhh wow, I did not see those gib screws.....

 

[Paul Fithian]

The are on the right side of the cross slide. Allen wrench is in the bolt for the carriage lock.

Both of these get blocked if mounting the scale on the right side of the cross slide.

 

[coolidge]

The are on the right side of the cross slide. Allen wrench is in the bolt for the carriage lock.

Both of these get blocked if mounting the scale on the right side of the cross slide.
View attachment 507851

I also used the follow rest bolt holes and mounted my scale on the left side for the same reasons, both locks still accessible.