Author Topic: Guy Lautard's small scriber  (Read 9778 times)

Offline Bernd

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Guy Lautard's small scriber
« on: March 12, 2010, 03:43:15 PM »
Here's a project I started a year or so ago. It's a small scriber as explained in Guy Lautard's first Beside Reader.



I started with a block of cast iron. I'd cut it out of a larger piece. It was put on hold and never touched again until
a couple of weeks ago. I decided I finally needed to finish the tool. I had already reamed a hole for the cotter key
and spoted a hole on the side for the scriber arm arbor.



What follows are just some pictures of the parts. No dimensions are given since you can very the size and also
it would be a copy infringement on Guy's work. The next 12 pictures are of the cotter keys and the shaft that they
fit on.

This is the begining of the cotter key.




The blank cotter key assembled in the reamed hole.


The hole had been drilled and reaned for a 1/4" dia. Note scalop in the brass. This is the part that will be needed.


Shows which way the cotter needs to face when finished.


The "top-hat" has been faced off and now the top part of the cotter is cut off.


A better pic of the cotter being cut exactly in the middle of the scalop.


And here are the two pieces of the scalop, plus a scale to show size. They are quite small.


The ends are faced off to clean them up.


Here they are with the arbor they are going on.




This shows the bottom of the scriber block milled out so only a small surface rides on the surface plate. Also a slot has been
milled for the small pin on the arbor, plus I tried a spring per Guy's drawing but did not use in the end.


The beginings of the scriber arm, plus two bottons to help with scribing a line.


I used the two bottons to help scribe a line so I could cut the taper in the mill. The scriberd line was lined up by eye in the vise
and a cut was taken.




Two brass knobs, a washer and the arbor for the scriber arm.




Next I cut out the large scalop in the block. I am going to take a plunge cut with a 1" dia. end mill. I've predrilled a hole since the
mill was not a center cutting mill.


There was way to much wobble in the mill with this method so I decided to mill in small steps from the side.


Here are all the parts ready for assembly into the scriber block


Here the scriber is assembled and showing how to set it.


Here it's being used to scribe a line on my next project.


There is still a bit of work to be done on the scriber block Such as adding the finger holds on the side and knurling the brass knobs.
But that's another thread. When I find my

I'll start the project.

Bernd
You can't fix "STUPID".

Offline usn ret

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Re: Guy Lautard's small scriber
« Reply #1 on: March 12, 2010, 05:42:56 PM »
WAAYY cool looks good works good!!!  NICE WORK :D Bernd
If it isn't broken your not looking hard enough!

Online mklotz

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Re: Guy Lautard's small scriber
« Reply #2 on: March 12, 2010, 06:16:00 PM »
I needed a low profile scriber for a project but I didn't have your patience so I cobbled this together...





It worked for my job but yours is much more professional looking.
Regards, Marv

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Offline Bernd

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Re: Guy Lautard's small scriber
« Reply #3 on: March 12, 2010, 07:03:32 PM »
Thanks Marv. Patience, that'll be a first for me. When the building bug bites me it bites hard. I've got another Guy Lautard project in the wings. Another one of those that I started a while back and needs finishing.

Your profile tool looks like something that's easy to make. Thanks for sharing that. Now there's two tools people can choose from to make.

usn ret, thanks. Works great. I really like how those cotter keys work. Not much effort is needed to tighten and hold that scriber arbor.

Bernd
You can't fix "STUPID".

Rob.Wilson

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Re: Guy Lautard's small scriber
« Reply #4 on: March 12, 2010, 07:06:59 PM »
Hi Bernd

Very nice , i have that on my to do list  :thumbup: i must get round to it

 mklotz  , very clever  :bow:  , good design  :dremel:

Cheers Rob

Offline dsquire

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Re: Guy Lautard's small scriber
« Reply #5 on: March 12, 2010, 11:28:55 PM »
Bernd

Looks like a handy little tool. Most of us should be able to make one from bits and pieces in the scrap box. A few extra holes her or there would just add character and make it look more versatile.  :lol: :lol:

Good job Bernd. :ddb: :ddb:

Cheers  :beer:

Don
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'til your good is better,
and your better best

Offline John Stevenson

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Re: Guy Lautard's small scriber
« Reply #6 on: March 13, 2010, 05:07:30 AM »
That brass cotter would have worked 'as is' with just the top hat cut off.

John S.
John Stevenson

Offline Bernd

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Re: Guy Lautard's small scriber
« Reply #7 on: March 13, 2010, 07:38:25 AM »
That brass cotter would have worked 'as is' with just the top hat cut off.

John S.

Not really John. You'd have to have the nut on the bottom of the scriber.

Bernd
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Offline Bernd

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Re: Guy Lautard's small scriber
« Reply #8 on: March 13, 2010, 07:40:09 AM »
Thanks for the compliments Rob & Don.

Finally got a bit of ambition to get some of these projects done or almost done. Feels good.  :ddb:  :nrocks:

Bernd
You can't fix "STUPID".

Rob.Wilson

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Re: Guy Lautard's small scriber
« Reply #9 on: March 13, 2010, 08:22:08 AM »
Hi Bernd

Will you be making the tool ,thats described in the book , to do the finger holds ? I have the three Beside Reader books great read  :coffee:

Cheers Rob

Offline John Stevenson

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Re: Guy Lautard's small scriber
« Reply #10 on: March 13, 2010, 08:50:52 AM »
That brass cotter would have worked 'as is' with just the top hat cut off.

John S.

Not really John. You'd have to have the nut on the bottom of the scriber.

Bernd

Yup just noticed that but if it had been fitted opposite before having the cutaway machined in then the nut would be at the top.

.
John Stevenson

Offline Divided he ad

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Re: Guy Lautard's small scriber
« Reply #11 on: March 13, 2010, 11:28:05 AM »
Nice looking bit of kit there Bernd  :thumbup:

I like the quick to set-upness  (yer it's a word!  ::)  ) 


Don't really need one myself though. Figure my vernier one does it. But for those who don't have them.... Or just want one? Then it looks like a nice easy project.
As you say, you don't need sizes.
These could be any size from an inch upwards, all the information is there in your pictures   :clap:  :dremel:





John,

Quote
That brass cotter would have worked 'as is' with just the top hat cut off.

John S.

Does this mean not drilling and splitting the cotter clamp?  Cause if this were the case and the clamp was left solid. Would it not pull on the round shaft of the scriber arm arbour when tightened? possibly more as wear takes place?
Thus making it sometimes frustrating to set as the scriber tip would possibly move by a fraction as the bar could rotate slightly as it was pulled tight by the screwing action on the brass knob?

If I'm getting the wrong end of the stick, sorry. But it sounds like that's what your saying?

See, I'm figuring the spring keeps the lower section of the clamp in contact with the arbour and the screw/knob then pushes the top part of the clamp into place. Thus minimising any effects on the arbour and hopefully eliminating possible rotation. But that's just what I think it's for?






Ralph.
I know what I know and need to know more!!!

Offline Bernd

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Re: Guy Lautard's small scriber
« Reply #12 on: March 13, 2010, 03:51:23 PM »
Hi Bernd

Will you be making the tool ,thats described in the book , to do the finger holds ? I have the three Beside Reader books great read  :coffee:

Cheers Rob

Yes I will. I figure I might do a little write up on it. I did one similar earlier to do a counterbore tool. I wish I had my Grizzly lathe so I could turn the ball on the end of the tool, unfortnatley the Grizzly is in many pieces awaiting a rebuild.

I've just about worn those books out from reading and rereading the stories and how to's. Trouble is you can get  :proj: from going through them.  :lol:

Bernd
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Offline Bernd

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Re: Guy Lautard's small scriber
« Reply #13 on: March 13, 2010, 03:56:59 PM »
Yes your right John, if I had it turned around your method would work.

Ralph,

Believe it or not what you describe is what's known as a solid cotter. What I did is a split cotter. There's also a blind cotter. Your lathe might have one to keep the tailstock from moving when your using a center in it. Take a look. As a matter of fact take it apart and you'll see.

(Ok how many of you actually took your tailstock apart to see if I was right? Show of hands please.  :wave: )

Bernd
You can't fix "STUPID".

Offline Pelallito

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Re: Guy Lautard's small scriber
« Reply #14 on: March 13, 2010, 06:27:04 PM »
Bernd,
It looks great!!
Where did that A-Round Tuit come from? I need about two dozen such buttons for all the unfinished projects that I have/ ::)
I have already taken my tail stock apart in the past, so you did not get me today. :D
Regards,
Fred

Offline Bernd

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Re: Guy Lautard's small scriber
« Reply #15 on: March 14, 2010, 09:20:04 AM »
Bernd,
It looks great!!
Where did that A-Round Tuit come from? I need about two dozen such buttons for all the unfinished projects that I have/ ::)

Here's the place it all started with the Round-Tuit: http://www.homemodelenginemachinist.com/index.php?topic=2476.0

Quote
I have already taken my tail stock apart in the past, so you did not get me today. :D
Regards,
Fred

Well at least you know how it works now, right?  :D

Bernd
You can't fix "STUPID".

Offline Pelallito

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Re: Guy Lautard's small scriber
« Reply #16 on: March 14, 2010, 04:06:14 PM »
Bernd,
Maybe he will start offering them for sale. I would love to buy them.
The tail stock had to come apart, somehow I had jammed it up. Probably after I tried to adjust something that did not need adjusting. :bang: :ddb:
Thanks again.
Fred