Lantern tool holder

[Bill YorkParticipant @billyork72513]

Hi folks, I am looking for a lantern type tool holder suitable for a 13" SB lathe. The lathe came with a few Armstrong holders and as lot of tips but no post, so if anyone has one they would part with drop me a pm. Thanks.

[Bill YorkParticipant @billyork72513]

Tool holder

[mechman48Participant @mechman48]

Try here: there are a few tool posts available

**LINK**

Failing that can you not machine the tops of your holders to fit appropriate QCTP ?

George.

[Bill YorkParticipant @billyork72513]

Posted by mechman48 on 04/12/2018 12:34:06:

Try here: there are a few tool posts available

**LINK**

Failing that can you not machine the tops of your holders to fit appropriate QCTP ?

George.

Thought about cutting the holder but I am loath to butcher original tooling. ps the link is not working. Thanks

[Yngvar FParticipant @yngvarf]

I made one for the Boxford. Fun little project.

[Bill YorkParticipant @billyork72513]

Posted by Yngvar F on 04/12/2018 13:58:19:

I made one for the Boxford. Fun little project.

Thought about that also but I do not have access to a milling machine and dont fancy all the filing involved producing the slot. did you also make the wedge.

[egaParticipant @ega]

Bill York:

I believe that the lantern or American toolpost is "correct" for the SB: its principle is rather like the old Myford Quick Set tool boat.

I see from your album that you are making progress. Is that blue-grey the standard SB "color"?

[Bill YorkParticipant @billyork72513]

Posted by ega on 04/12/2018 14:20:39:

Bill York:

I believe that the lantern or American toolpost is "correct" for the SB: its principle is rather like the old Myford Quick Set tool boat.

I see from your album that you are making progress. Is that blue-grey the standard SB "color"?

No, it is Rust-oleum anthrasite it is the coulor i use on all my restorations.

[mechman48Participant @mechman48]

I am running in protected browser try this…

https://www.ebay.com/itm/Armstrong-Rocker-Tool-Post/264062876582?hash=item3d7b5fbba6:g:mhcAAOSwhX5b~dw2:rk:31f:0

George.

edited to remove emoji.

Edited By mechman48 on 04/12/2018 14:49:35

[Brian OldfordParticipant @brianoldford70365]

Hi Bill

I have one here of about the right size but missing the curved "boat" piece. You're welcome to it for the P&P if you're too far to collect. I'm in Shropshire.

[Bill YorkParticipant @billyork72513]

Posted by Brian Oldford on 04/12/2018 15:24:31:

Hi Bill

I have one here of about the right size but missing the curved "boat" piece. You're welcome to it for the P&P if you're too far to collect. I'm in Shropshire.

That would be a great help, I am near Northwich but i have several relatives up that way, where abouts are you.

[Brian OldfordParticipant @brianoldford70365]

I've messaged you Bill

[Clive FosterParticipant @clivefoster55965]

If you use Armstrong style holders the curved boat piece and matching washer are pretty much redundant as the built in rake angle allows the tool tip height to be adjusted by sliding the tool bit in and out. Just make a thick washer and call it done. Actually make two. A thick one for normal turning and a thinner one to use on those jobs that need the tool bit pushed further out to avoid interference form the Armstrong holder. Using a flat washer has the great advantage that you can swivel the tool without loosing tip height setting.

Best way to set tip height with an Armstrong or lantern is to arrange for a suitably sized flat piece to be supported above the bed with its bottom side at centre height. Just slide the tool bit out of the Armstrong or tilt the lantern until the tip touches. There are a goodly number of ways in which a device of this ilk can be made. Mostly dependant on what materials are to hand in the bits box. Mine was fitted to a small Eclipse pot magnet and stalk. Not exactly ideal as the need to be slid on and off the bed along with the inherent tendency to collect ferrous swarf sometimes led to excessive worship language. But good enough that anything seriously better needed more work than I wanted to invest.

Personally I've always regarded the two slot block, easily made up from stock bar and plate sections, a much better way of carrying Armstrong holders than the lantern. Never could be doing with the lanterns tendency to move in 64 different directions simultaneously when the top bolt is released or the near impossibility of repeatable location. Also the tool tip necessarily has to divine its support at considerable distance which can, from a mechanical point of view, hardly be considered ideal.

One excellent, usually overlooked, detail about SouthBends is that the top slide toolholder fixing Tee slot widths are very slightly larger than standard Imperial bar sections. So effective, full length, Tee nuts can easily be made by screwing and gluing two standard sections together before fitting a suitable tapped hole in the middle for the stud. Hence slotted block type tool post and Tee nut assemblies can be made by screwing and gluing stock sections together without the need for milling facilities to carve from solid. In my SouthBend driving days I had several such assemblies which I used as a sort of poor mans QC system. Half a turn of the locking handle being ample to allow one block to be slid out and a new one slid in.

Clive.

[Yngvar FParticipant @yngvarf]

Posted by Bill York on 04/12/2018 14:13:02:

Thought about that also but I do not have access to a milling machine and dont fancy all the filing involved producing the slot. did you also make the wedge.

Made the wedge on the faceplate with some packing under. The only milling involved is the slot.

This could be done in the lathe with a little ingenuity.

Edited By Yngvar F on 04/12/2018 19:40:50

[egaParticipant @ega]

Posted by Clive Foster on 04/12/2018 18:06:48:

…

sometimes led to excessive worship language

…

Clive Foster:

Did you mean "workshop language"? As in LBSC's "workshop Esperanto"?

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