Re: What are you working on now?
Posted: February 13th, 2020, 2:56 am
Yup, it is 7x12 actually
It was out of my "target" rigidity, squareness and precision, so I started from scratch. Made lot of new parts and mods. Will update with new pics once I finish.
Above many, I made/changed:
scrapping bedways
milling Vee groove on saddle (for about 0.35mm) to make it true and parallel with bed. Actually, saddle was 0.6mm lower on one bed-way, so tool would travel below centerline

new tappered roller bearing in headstock;
new transmission plate and lever with gears for changing direction of driveshaft. Lever is now on front side, much easier for operation;
new drive pulleys, changed to HTD 5M, with brushless DC motor;
5 inch chuck plate;
extended cross slide travel spindle and housing with bearings;
new handwheels on cross slide, apron, tailstock and compound slide; Handwheels have resetable dials now.
all dovetails on saddle and compound slide are milled again to perform much better accuracy and contact surfaces;
Tailstock lever action lock;
saddle lock;
added fixture for motor on cross slide to perform automatic cross feed.
cooling system added, reservoir under the dish plate. It also needed to make some cast iron stand so lathe is now higher about 12 cm...
Bed casting is sandblasted before painting

headstock, saddle and compound plate are brushed on magnetic brush machine to provide true flatness.
Here is machine in action, brushing some other parts....
Made new quick change toolpost (see image) from steel..




It took me last three months
It was out of my "target" rigidity, squareness and precision, so I started from scratch. Made lot of new parts and mods. Will update with new pics once I finish.
Above many, I made/changed:
scrapping bedways
milling Vee groove on saddle (for about 0.35mm) to make it true and parallel with bed. Actually, saddle was 0.6mm lower on one bed-way, so tool would travel below centerline
new tappered roller bearing in headstock;
new transmission plate and lever with gears for changing direction of driveshaft. Lever is now on front side, much easier for operation;
new drive pulleys, changed to HTD 5M, with brushless DC motor;
5 inch chuck plate;
extended cross slide travel spindle and housing with bearings;
new handwheels on cross slide, apron, tailstock and compound slide; Handwheels have resetable dials now.
all dovetails on saddle and compound slide are milled again to perform much better accuracy and contact surfaces;
Tailstock lever action lock;
saddle lock;
added fixture for motor on cross slide to perform automatic cross feed.
cooling system added, reservoir under the dish plate. It also needed to make some cast iron stand so lathe is now higher about 12 cm...
Bed casting is sandblasted before painting
headstock, saddle and compound plate are brushed on magnetic brush machine to provide true flatness.
Here is machine in action, brushing some other parts....
Made new quick change toolpost (see image) from steel..
It took me last three months



. Did you do it all yourself and is the Triangle pip applied?
