It is currently 19 Jun 2021, 00:41

Large roughing gouge. Tight curve or shallow curve.

The place to find and post anything related to the world of spinning wood at ridiculously high speeds!

Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 11 Oct 2020, 06:49

At work I ended up having to turn a rather large piece of pine. 6,5 metres long with finished diametre varying between 28 and 47 cm. I roughed out the blank using standard spar making techniques fist hewing it square then 8-sided then 16-sided to just over the finished diametre. We cobbled together a temporary lathe on site from some leftover 8x8" beams and some iron materials from the scrap yard. It works well enough for this single job.....except that I need a larger gouge for roughing out and maybe a larger skew for smoothing. My ordinary turning tools were too flimsy and not long enough to give me the leverage needed to hold them steadily.

So..... I need to forge quickly up an extra large gouge from an old leaf spring that once held the seat on a horse drawn hay rake. Should it have a tight curve or a shallow curve for this purpose?
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby DaveL » 11 Oct 2020, 08:08

I think the usual tight curve gives a stronger shape and if the tool is rolled over sideways allows for the whole edge to be used. That gives a longer time of use, before another trip to the grinder.
Just my thoughts
Regards,
Dave
My tool kit is almost complete, only a few more to get.
User avatar
DaveL
Old Oak
 
Posts: 1592
Joined: 21 Jul 2014, 21:07
Location: Sudbury, Suffolk
Name: Dave

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Duncan A » 11 Oct 2020, 09:46

I'm impressed!
With no experience whatsoever with something this big, I think I would be inclined to use the spring as a tipped tool attached to a strong steel backing bar as a roughing tool. Pretty sure I wouldn't have the courage to use a skew for finishing!
Duncan
Duncan A
Seedling
 
Posts: 24
Joined: 09 Nov 2016, 17:31
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Woodster » 11 Oct 2020, 10:30

Yes I think I’d stick to the standard deep curve as well. Sounds like an interesting job!
User avatar
Woodster
Old Oak
 
Posts: 1403
Joined: 26 Jan 2017, 13:17
Location: Dorset
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Andyp » 11 Oct 2020, 11:11

Are you allowed/able to take photos at work to share here?
That sounds like a very interesting lathe. How is it powered?
cheers

Andy
“Sometimes I sits and thinks, and sometimes I just sits...” A.A. Milne

Doing my best to achieve Wabi Sabi
User avatar
Andyp
Sequoia
 
Posts: 7812
Joined: 22 Jul 2014, 07:05
Location: 14860 Normandy, France
Name: Andy

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 13 Oct 2020, 19:20

Thanks. A tight curve gouge it will be.
I hurt my hand when cutting up some cabbage so the forging was postponed a couple of days. Nothing serious but the wound would interfere with the reins of the tongs.

My employer already published a film of the very rudimentary lathe:
https://sv-se.facebook.com/stundars/vid ... =3&theater
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby droogs » 13 Oct 2020, 20:01

heimliga, I'm not sure but I think you have to turn it a bit faster than that :D
droogs
Sapling
 
Posts: 480
Joined: 09 May 2015, 10:35
Location: Edinburgh
Name: Alan

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 15 Oct 2020, 00:44

droogs wrote:heimliga, I'm not sure but I think you have to turn it a bit faster than that :D


I don't think so...... you see...... we just turn grooves to establish the depth and then remove the rest of the wood with a large drawknife. Then go over it one single cut with the turning tool. The amount of wood to be turned away is actually minimal.
I got a fully adequate result with the gouge I have except for one thing. It was too short for me to hold it steady.

So...... I am not quite as daft as I may seem...... believe it or not.
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Andyp » 15 Oct 2020, 06:11

It's man powered :shock:

That is some lathe!
cheers

Andy
“Sometimes I sits and thinks, and sometimes I just sits...” A.A. Milne

Doing my best to achieve Wabi Sabi
User avatar
Andyp
Sequoia
 
Posts: 7812
Joined: 22 Jul 2014, 07:05
Location: 14860 Normandy, France
Name: Andy

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Andyp » 15 Oct 2020, 07:56

I google translated the description under the video and I am none the wiser

Sometimes the bearing surfaces of the Mamsell mill's wing shaft must be turned


I am left wondering what it is that you are making? A mast for a boat perhaps
cheers

Andy
“Sometimes I sits and thinks, and sometimes I just sits...” A.A. Milne

Doing my best to achieve Wabi Sabi
User avatar
Andyp
Sequoia
 
Posts: 7812
Joined: 22 Jul 2014, 07:05
Location: 14860 Normandy, France
Name: Andy

Re: Large roughing gouge. Tight curve or shallow curve.

Postby DaveL » 15 Oct 2020, 09:25

Andyp wrote:I google translated the description under the video and I am none the wiser

Sometimes the bearing surfaces of the Mamsell mill's wing shaft must be turned


I am left wondering what it is that you are making? A mast for a boat perhaps
From that translation, I would guess it's a shaft for a wind/water mill?
Regards,
Dave
My tool kit is almost complete, only a few more to get.
User avatar
DaveL
Old Oak
 
Posts: 1592
Joined: 21 Jul 2014, 21:07
Location: Sudbury, Suffolk
Name: Dave

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 15 Oct 2020, 19:43

Aye
It is the wind shaft for a windmill of the smock or Dutch type. We need to turn the bearing surfaces before letting in the bearing bars.
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 21 Oct 2020, 18:41

Both the roughing gouge and the skew work and we make progress!

Unfortunately I overheated the gouge slightly in the forge so the grain structure at the tip is a bit coarse and the hardening a bit uneven due to varying carbon content.
Anyway it is good enough for this job.

https://sv-se.facebook.com/stundars/vid ... 175455302/
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Malc2098 » 21 Oct 2020, 18:47

I 'liked' the video.

That'll keep a person warm turning that handle for you!! :D
Malcolm
User avatar
Malc2098
Sequoia
 
Posts: 5245
Joined: 03 Jul 2016, 11:10
Location: Tiverton
Name: Malcolm

Re: Large roughing gouge. Tight curve or shallow curve.

Postby droogs » 21 Oct 2020, 19:38

is it a one off size thing or do you need to do more that size. Would it be worth the time and effort to make a longer handle for the gouge or can you put a piece of pipe on it?
droogs
Sapling
 
Posts: 480
Joined: 09 May 2015, 10:35
Location: Edinburgh
Name: Alan

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Andyp » 22 Oct 2020, 07:14

I hope that you can keep up us updated on this project, fascinating.
Are you building a windmill from scratch or repairing an existing one? I’d love to see more.
cheers

Andy
“Sometimes I sits and thinks, and sometimes I just sits...” A.A. Milne

Doing my best to achieve Wabi Sabi
User avatar
Andyp
Sequoia
 
Posts: 7812
Joined: 22 Jul 2014, 07:05
Location: 14860 Normandy, France
Name: Andy

Re: Large roughing gouge. Tight curve or shallow curve.

Postby DaveL » 22 Oct 2020, 07:42

Andyp wrote:I hope that you can keep up us updated on this project, fascinating.
Are you building a windmill from scratch or repairing an existing one? I’d love to see more.
+1
Regards,
Dave
My tool kit is almost complete, only a few more to get.
User avatar
DaveL
Old Oak
 
Posts: 1592
Joined: 21 Jul 2014, 21:07
Location: Sudbury, Suffolk
Name: Dave

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 22 Oct 2020, 15:07

Repairing a windmill.
It was built in Replot in 1867-1880 and moved to the Stundars open air museum in 1989.
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Andyp » 22 Oct 2020, 17:15

Am I right in thinking that by "wind shaft" you are referring to the vertical shaft that transfers the motion of the sails at the top to the mill stones at the bottom?
I saw something that was perhaps similar in the Netherlands in 2016 at Zeddam

The best image I have is this one
IMG_20160717_112538881.jpg
(387.62 KiB)


Are the bearing surfaces that you are turning where the horizontal cogged wheels attach?
As you can see at Zeddam the shaft was left square.
cheers

Andy
“Sometimes I sits and thinks, and sometimes I just sits...” A.A. Milne

Doing my best to achieve Wabi Sabi
User avatar
Andyp
Sequoia
 
Posts: 7812
Joined: 22 Jul 2014, 07:05
Location: 14860 Normandy, France
Name: Andy

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 22 Oct 2020, 19:28

It is the horizontal shaft that carries the wings.


We do not know absolutely certainly in every detail how theese shafts were made back in the 19th century but we took a closer look at the tool marks on an original wind shaft made in 1891 and it had obviously been hewn and then hand planed using a two man "oxhyvel". The bearing surfaces looked turned and there were 1 1/2 inch holes drilled in the exact center of each end seemingly for the centers of a makeshift lathe.
This is our rendition of what we think we found out.

This particular windmill lost it's wings and shaft in the 1920-ies so we are reverse engineering as best we can.
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:

Re: Large roughing gouge. Tight curve or shallow curve.

Postby Andyp » 22 Oct 2020, 19:31

I see, thank you.
I do so hope that you will be turning, at least in part, the vertical shaft too.
cheers

Andy
“Sometimes I sits and thinks, and sometimes I just sits...” A.A. Milne

Doing my best to achieve Wabi Sabi
User avatar
Andyp
Sequoia
 
Posts: 7812
Joined: 22 Jul 2014, 07:05
Location: 14860 Normandy, France
Name: Andy

Re: Large roughing gouge. Tight curve or shallow curve.

Postby heimlaga » 23 Oct 2020, 05:44

The original vertical shaft is still perfectly sound so fortunately we don't have to do anything to it.
heimlaga
New Shoots
 
Posts: 55
Joined: 15 Sep 2020, 19:38
Location: Österbotten Finland
Name:


Return to Turning (Wood or any other material you fancy)

Who is online

Users browsing this forum: No registered users and 2 guests