Mechanically fastening lathe dog to faceplate?

T

tobnpr

Hot Rolled

Joined

Sep 27, 2015

• Oct 20, 2018

• #1

I want to fasten my lathe dog to the faceplate to enable use of the steady at the working end-
no tailstock- with the chuck end dogged to a dead center. I've seen them tied but knots aren't my thing....
Must hold the work rigidly against the center with no slippage. Maybe U-bolts or similar, any tried and true easy solutions?

 

johnoder

Diamond

Joined

Jul 16, 2004

Location

Houston, TX USA

• Oct 20, 2018

• #2

tobnpr said:

I want to fasten my lathe dog to the faceplate to enable use of the steady at the working end-
no tailstock- with the chuck end dogged to a dead center. I've seen them tied but knots aren't my thing....
Must hold the work rigidly against the center with no slippage. Maybe U-bolts or similar, any tried and true easy solutions?

Click to expand...

Worked for me

 

Attachments

• 
  P1000416sm.jpg

  86.4 KB · Views: 318
• 
  P1000418sm.jpg

  89.2 KB · Views: 251

1

10KPete

Hot Rolled

Joined

Dec 21, 2008

Location

Nordland, WA

• Oct 20, 2018

• #3

Very nice, John! I've done similar a couple of times years ago. I was doubtful until about 2 minutes into the first job, then WOW why didn't I think of that long ago!!! Next job, no question how..

Pete

 

I

Illinoyance

Stainless

Joined

Aug 24, 2015

• Oct 21, 2018

• #4

The old books recommend lashing it on with wet rawhide. It shrinks and holds everything tight. The only knot you need to know is a square not for fastenings the ends together. If you can't learn to do a square knot you probably need help to get your shoes tied.

 

wheels17

Stainless

Joined

May 10, 2012

Location

Pittsford, NY

• Oct 21, 2018

• #5

I've never done it myself, but I have seen a picture of one of those cheap overlapping tap wrenches clamped to the work and held down to the faceplate with eyebolts.

The wrench was like the one in this set: Irwin Hanson 12-Piece Tap & Die Set - 24612 - Do it Best

 

T

Technical Ted

Cast Iron

Joined

Dec 31, 2017

• Oct 21, 2018

• #6

No way to use a chuck or collet to hold the headstock end? I guess not, or you wouldn't be asking the question. Didn't want to overlook the obvious...

Ted

 

K

kitno455

Titanium

Joined

Jul 9, 2010

Location

Virginia, USA

• Oct 21, 2018

• #7

Drill holes in faceplate, use zipties.

allan

 

I

iwananew10K

Diamond

Joined

Sep 12, 2010

Location

moscow,ohio

• Oct 21, 2018

• #8

Make a winged split collar, bolts through wings into tapped holes in plate.

 

MilGunsmith

Stainless

Joined

Mar 6, 2006

Location

Sandyston, NJ

• Oct 21, 2018

• #9

Whatever you do, don't fasten it so that there is no flex. The idea of using a center and faceplate with a dog is so that the work has no influence outside of the center points to be distorted. The old timers used rawhide laceing for this reason.

 

I

iwananew10K

Diamond

Joined

Sep 12, 2010

Location

moscow,ohio

• Oct 21, 2018

• #10

Yes, you don't want a completely rigid connection.

 

K

k3vyl

Stainless

Joined

Feb 13, 2008

Location

newark DE USA

• Oct 22, 2018

• #11

If you plan to need this type of fixing often,you can make up a clamp dog from square stock.This thing resembles a tool makers clamp with V grooves centered between the screws.One of the bars needs a tail that sticks out like the jaws of the clamp would. Drill and tap the tail for thread rod that will be used to double nut the thing to the face plate.
Set the work up between centers and dog everything down at the plate end.Install the steady rest near the headstock and set it up.Move the steadyrest to the other end and back off the tailstock.
You can do whatever to that piece of stock without the tailstock.
The bars in the picture are 5/8 hot rolled.Bolts 5/16-18.

 

Attachments

• 
  STH71579.jpg

  78.5 KB · Views: 107

M

MrWhoopee

Hot Rolled

Joined

Nov 8, 2017

• Oct 23, 2018

• #12

The South Bend "How to Run a Lathe" says to unscrew the drive plate a couple of turns, lash the dog to the plate (they say to use rawhide, you'll probably have to use something else), then tighten the drive plate down on the spindle to tighten the lashings.