Search found 17 matches

by martik777
Wed Jan 09, 2019 9:27 pm
Forum: Lathes
Topic: Adding a QC gearbox to Logan 200 lathe
Replies: 2
Views: 1950

Re: Adding a QC gearbox to Logan 200 lathe

Try asking here: https://groups.io/g/Lathe-List/topics

I stopped using my South Bend 9A QCGB (except for threading) and reversing lever after installing a variable speed reversible DC motor to the leadscrew.
by martik777
Tue Dec 22, 2015 6:20 am
Forum: Milling Machines
Topic: HF mill/drill vs. Mini-lathe milling attachment
Replies: 16
Views: 4227

Re: HF mill/drill vs. Mini-lathe milling attachment

For that $300 spent on an attachment, one could get a used round column for not much more or the HF mini mill on sale now for approx $500 with 20% coupon. Consider an ER25 collet chuck and set of collets for about $50 from ebay. The collets will hold all your drill bits and end mills up to 5/8". Eve...
by martik777
Fri Jan 23, 2015 10:59 pm
Forum: General Discussion
Topic: Metal slivers in your fingers
Replies: 40
Views: 4206

Re: Metal slivers in your fingers

These work well:
http://www.ebay.com/itm/20X-Magnifier-M ... 3a9580fe68

unscrew and remove outer lens to reduce power
by martik777
Tue Nov 04, 2014 12:10 am
Forum: Milling Machines
Topic: New Mini Mill
Replies: 9
Views: 3508

Re: New Mini Mill

A 1/4" DOC in A36 with that mill is amazing! What kind of end mill did you use?
by martik777
Tue Oct 28, 2014 1:56 am
Forum: General Discussion
Topic: Machines are too big
Replies: 22
Views: 2868

Re: Machines are too big

Attach a high speed "spindle" to your existing 6x26?

http://www.cnccookbook.com/CCHighSpeedSpindleAddOn.htm
by martik777
Sun Oct 26, 2014 4:00 am
Forum: General Discussion
Topic: Machines are too big
Replies: 22
Views: 2868

Re: Machines are too big

I bought a taig to complement my South bend 9A but still lean towards the 9A for small parts, just because it is so much easier to use. I have not found the lower rpm (650rpm) an issue even down to 1mm. Smallest part I've made on the 9A is a screw for eyeglasses - .056" diameter and 80tpi. Just make...
by martik777
Fri Oct 24, 2014 10:03 pm
Forum: General Discussion
Topic: Where to buy good HSS tool bits.
Replies: 16
Views: 2418

Re: Where to buy good HSS tool bits.

I have had good results with HSS stock from
http://www.ctctools.biz/servlet/the-Cut ... Categories

I really can't see much difference over the USA name brands.

Dirt cheap and a great selection of square, rectangular and round toolbits up to 200mm (8" long)
by martik777
Mon Aug 04, 2014 2:41 am
Forum: Lathes
Topic: Newbie considering a lathe purchase. Help narrow the list.
Replies: 61
Views: 9100

Re: Newbie considering a lathe purchase. Help narrow the lis

Get an ER collet chuck and collets and you won't even need a drill chuck. RF25 will handle almost any tooling but you may want to go larger if you share the collets with a lathe.
by martik777
Mon Jul 21, 2014 7:01 am
Forum: Milling Machines
Topic: Worth it to Get Collets for Drilling?
Replies: 20
Views: 2292

Re: Worth it to Get Collets for Drilling?

I have never used a drill chuck on my mill. The ER25 chuck is permanently mounted and handles all my tooling. I must admit, I frequently switch the work to my drill press for drilling/tapping as it is right beside the mill. A full set (1-16mm) and collet chuck is under $70. If you want to use ER col...
by martik777
Mon Jul 21, 2014 6:35 am
Forum: Lathes
Topic: Newbie considering a lathe purchase. Help narrow the list.
Replies: 61
Views: 9100

Re: Newbie considering a lathe purchase. Help narrow the lis

The OP did not mention a budget, but the problem with Asian is you cannot get "basic" features like power xfeed and a real QCGB under $3,000. I paid $400 for my 70 year old South Bend 9A 3 years ago and absolutely love it. I did have to cut a new back gear and repair the bull gear, which cost me not...
by martik777
Wed Jul 02, 2014 4:24 am
Forum: General Discussion
Topic: Screw for Chinese Co-Ax Indicator Probe?
Replies: 17
Views: 1956

Re: Screw for Chinese Co-Ax Indicator Probe?

You have a lathe, make a thumbscrew. 52tpi will get you close enough to .5mm (2.3% error) or just use a die
by martik777
Fri Feb 14, 2014 7:37 pm
Forum: Lathes
Topic: Milling in the lathe
Replies: 14
Views: 2741

Re: Milling in the lathe

Check out this milling table, post #133:

http://www.practicalmachinist.com/vb/so ... ndex7.html
R11LineBoreSetUp.jpg