From the Workshop

January 23, 2015

Window to my Workshop 85

Filed under: A28 — Tags: , , — admin @ 4:21 pm

I am occasionally asked how to dovetail. It is a bit of a cheeky question and it would take me several months or more full time to teach this properly. Sometimes people seem to forget I am running a business.

I have been making dovetailed planes for over 25 years now and I still keep trying to improve my system. Another plane maker described my dovetails as made on the CNC and are very cold and clinical – is this how one would describe a precision job? Then guilty as charged.

Here are some photos of part of the dovetailing process.
 
Holtey A28 b

Holtey A28 c
 
Sometimes it is frustrating that I have to do this much work before closing a plane up. The pictures above show a Boxwood spacer which supports the sides whilst peining the dovetails. Sometimes I use aluminium for this process but as I am only making 6 planes it doesn’t have to do much work. Also the sides of the plane will not be scratched when removing the spacer. A lot of work for a piece of tooling which will be discarded after six uses.
 
 
Holtey A28 d
 
Showing everything in place ready for clamping in the vice. Note that the clamping plates support the dovetails as well. There is no movement and everything stays true to size.
 
 
Holtey A28 f
 
This is the first stage of peining. You will see that the peining looks quite messy and untidy as I am stuffing the extra brass into the voids.
 
 

Holtey A28 e
 
The last stage of peining the dovetails is the sides. Again the assembly is clamped in a precision vice with a spacer plate between the uneven peining on the underside so true reference is maintained.
 
The use of bimetals will show up any untidiness.
 
Easy isn’t it :-)

January 19, 2015

Window to my Workshop 84

Filed under: A28 — Tags: , — admin @ 3:57 pm

Final tweaking and polishing before assembly

Holtey A28 a

Once assembled there is no access

January 16, 2015

Window to my Workshop 83

Filed under: A28 — Tags: , , , — admin @ 3:12 pm

Progress on my A28 Chariot Plane

Holtey A28

This picture shows some idea of all the work that goes into this plane. Unless you have done it yourself you can never imagine the effort and thought that goes into making this Chariot. This plane is made to a standard light years beyond its original counterpart made by Norris.

November 5, 2014

Window to my workshop 82

Filed under: A28,Chariot Plane,Window to my workshop — Tags: , , , , — admin @ 11:33 am

During the working of this A28 plane I have been neglecting this blog but now I am ready to update which I will do over the next few weeks.
 
 
Holtey A28 f
 
All the sections I use are cut out of stock material and brought down to size, by sawing and milling.
 
 
Holtey A28 g
 
As most of my working and setting out depends on a high degree of precision (which has never existed before) surface grinding in the early stages allows me to achieve my goals.
 
 
Holtey A28 h
 
This picture shows the edges being ground. This is also important to have a true pinch dimension. I need this for the dovetailing.
 
 
Holtey A28 b
 
Jigs and work holding fixtures are also all made to precision. After much preparation work to the brass, similar to the steel work as described. Then rivet positions are drilled and I am able to screw these sides with purpose made bolts to the fixture for profiling and chamfering.
 
 

Holtey A28 c
 
After routing out the profile then the chamfering is completed whilst the sides are still jigged.
 
 
Holtey A28 d
 
Just overall set up pictures.
 
 
Holtey A28 e
 
 

Holtey A28 a
 
Here are the some sides already milled and some pre-prepared waiting for profiling.
 

September 1, 2014

Window to my Workshop 81

Filed under: A28,Chariot Plane,Window to my workshop — Tags: , , , , — admin @ 2:52 pm

This Chariot is the last item in the series of low angle planes I have been making recently. I have only made a few of these planes and that was a long time ago in my early days of plane making. Then my side profiles were cut by hand and I made up a template which I would scribe round. Now that I CNC these the machine can’t see my template so I have had to re-draw it showing co-ordinates to write a programme from.

This line drawing by today’s standards might look a bit primitive but I have never had the leisure to learn to use a CAD. With a drawing showing contours I can write this in to my control unit. Drawing contours is more instinct than anything and I just know when it is right however long it takes (I would be ashamed to tell you how long these ones took).

Holtey Chariot Plane - Copy

June 10, 2014

Window to my Workshop 80

Filed under: A27 Bullnose,Window to my workshop — Tags: , , — admin @ 3:59 pm

The bullnose and shoulder plane blades must be the most work intensive. Once finished I celebrate with a photo!
 

Bullnose blades 2
 
 
Bullnose infills
 
Infill/adjuster housing/plane bed – whatever

Always a good feeling when nearing completion, although there is still a lot of fitting and finishing after they are separated.

May 14, 2014

Window to my Workshop 79

Filed under: A27 Bullnose,Window to my workshop — Tags: , — admin @ 10:53 am

Blades back from heat treatment. They have been vacuum hardened and triple tempered, followed by a two hour nitrogen soak. Note that there is no colouration to the blades, which means there were perfect conditions with no leakage.
 

Holtey bullnose blades
 

Now they ‘just’ need polishing and surface grinding.

May 13, 2014

Window to my workshop 78

Filed under: A27 Bullnose,Window to my workshop — Tags: , , — admin @ 12:09 pm

Blades for the Bullnose plane
 
 

Holtey Bullnose 9
 
Cutting the blade bevel
 
 

Holtey Bullnose 11
 
The blade is secured by its adjusting holes etc, in a purpose made holding block, for profile milling.
 
 

Holtey Bullnose 13
 
The milling is coming to an end of the first cut.
 
 
Holtey Bullnose 15
 
The finishing cut.
 
 
Holtey Bullnose 16
 
Profiling complete, with just the side bevels to be done. This is a quick summary of some of the blade work.
 
 
Holtey Bullnose 17
 
A picture of the main components ready for assembly. It has been a long time getting here. It is just like climbing a mountain – you keep seeing false summits.
 

April 30, 2014

window to my workshop 77

Filed under: A27 Bullnose,Window to my workshop — Tags: , , , — admin @ 10:53 am

Back working on the Bullnose after so much downtime with the grinding machine maintenance:

 

A27 Bullnose Holtey 1
 
 
A27 Bullnose Holtey 2
 
 
Pictures 1 – 4
This is the cast iron infill for the Bullnose. As you can see this is a complex shape so I will let the pictures speak for themselves. As with most things I design and make I go places that have never been visited, making these planes very unique.
 
 
A27 Bullnose Holtey 3
 
 
A27 Bullnose Holtey 4

 
 

A27 Bullnose Holtey 6
 

This shows the pin side of the dovetails being milled.
 

A27 Bullnose Holtey 5

 

Rebating the tops of the dovetail area, which provides a light stop and gives the dovetails a better form. Again this system is unique to my planes.

April 29, 2014

window to the workshop

Filed under: Window to my workshop — Tags: , — admin @ 1:15 pm

One of the problems of making precision planes is needing your own tool room. This means that on occasions maintenance is necessary.
 

A simple task like cleaning my coolant tank got so complicated that two weeks went passed before I could get the grinding machine back in service again.
 

Jones and Shipman
 
 
My schedule is now running late and I am looking forward to getting back to working on planes again.

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