January Zoom Demo

Our thanks go out to both Steve Hackett and Robert Hackett who were able to come together and put on the turning demo for those of us who are in lockdown and unable to move around.

Robert Hackett – Gesso Texturing Technique

Robert started by applying black gesso on to a pre-turned bowl shape, whilst this was still wet sawdust was added which adhered to the surface of the wet gesso.  

A second layer of gesso was then added all over to remove the color of the sawdust showing.  This technique when applied does not need to be perfectly smooth as it is covered and will allow for a better key for the gesso.

When this piece had dried a mixture of Hampshire Sheen Embellishing Waxes was applied by dabbing this onto the top of the gesso and then rubbed into the bowl surface by way of a cheap toothbrush. Robert was also explaining the process as he progressed through the complete process.

Steve Hackett – Twisted Three-sided Weed Pot – (Multi-Axis Turning)

Steve started with a blank that needed to be turned round.  When this had been accomplished the marking up process was detailed onto the blank.

This marking up process was shown both live and through the use of a slide show.

Steve started by dividing the blank into three equal parts by means of the indexing set up included in the lathe headstock.  Two pencil rings were added to each end of the blank, the first one 10mm in and then the second one, in a further 5mm.  The equal lines were then extended down each end so that we have three areas marked on the inner ring.  These were then numbered 1, 2, and 3 on each end so that they matched up, these are 1200 apart.

To get the twist the following number combinations were used;

1 – 2, 2 – 3, 3 – 1    these give a twisted shape

If you only require a three-sided item, match up the following numbers;

1 – 1, 2 – 2, 3 – 3

Additional multisided items can be developed by using the same method.

The blank was mounted between centers with a two-prong drive in the headstock and a pointed live centre in the tailstock.

At this point Steve started the process of turning the twist, this was done by looking at the ghost image at the top of the turning blank, following the curve to get an equal displacement along each side.  

Steve stated that the turning should be cut from the centre out towards the ends, this prevents an aggressive cut from being applied to the ends.  The speed of the lathe went up as high as was safe to do so due to cutting a lot of free air. If you only cut straight across, you will end up with a project that bulges in the middle.

This was then sanded and sealed, a tenon was cut onto the one end and remounted into a scroll chuck.

A hole was then drilled down the weed pot by using a starting point with the aid of an engineering centre drill.  The top of the jar was then trimmed by scalloping the top into the bored hole.

At this point, a jam chuck was mounted and the weed pot was inverted and mounted on the jam chuck, the base was then scalloped out and finished, this process allowed it to stand correctly on a surface.

The weed pot was finished by buffing with a series 3 of buffing wheels on the lathe, Steve explained and demonstrated how to use this system.

The buffing wheels used are available from  The Polishing Shop. 

https://www.thepolishingshop.co.uk/polishing-kits/horn-wood-polishing-kits/menzerna-horn-and-wood-kit-for-a-bench-grinder-750160

Steve commented on the process as he worked through it, during the demo, a Blue Peter moment was required when the blank voluntarily removed itself from the lathe.

With the way that the lockdown is developing at present, the next demo will also be put on by Steve and Robert Hackett.

Last but not least we must also thank Robert for operating all of the equipment that allows these demos to take place.

Report by Barrie Fisher & Steve Hackett

Zoom Demonstration 1 by BCWT Club Members – August 20th 2020

PPE requirements

Gloves – Mask – Glasses or goggles – enclosed shoes

Also have a fire extinguisher on hand just in case you did not clean the area sufficiently first.

Tools

Scraping chisel – Parting tool – could also use carbide tools – patterning tools.

The Demo

This is the first demonstration carried out by a club member whilst on zoom, this is a bit nerve racking as there is no audience in front of you whilst you are explaining what is happening throughout the process and also a different type of how to ask questions, therefore this will be a steep learning curve for all of us in the use of the cameras and sound and recording of the process.

The Black Country Wood Turners club will be having one of their own Roger Cheshire to demonstrate how to use pewter within a wood turned project for this evening. The pewter can be turned into cabochons, finials and rings, all of which can be decorated.

Roger started by explaining how to obtain pewter from various sources and demonstrated how to cut the pewter down and melt. The melting pot was a standard milk pan to contain the pewter and then a camping gas single hob canister heater which is more that sufficient to melt the pewter, Roger has found over the years to melt the pewter and let is cool for a while and then reheat to melted prior to pouring. There is also the possibility of getting slag on top of the pewter which can be remover with a fork or spoon, at this point don’t tell the wife you have just used the best pan and utensils for this work. You will also need a level surface before you pour the pewter to get it level within the former.

Whilst waiting for the pewter to melt Roger mounted some wood on to the lathe to form a former for the pewter to be poured into, a steady hand is required whilst pouring, you need to take it steady but not too slowly for when the two ends of the molten pewter in the former a tenon was also turned into the former so that the solid pewter could be inserted into a chuck with gripper jaws ready for shaping. This was then turned to the required size ready to be inserted into the turned wooden item.

Prior to pouring the melted pewter the former itself was warmed up to remove any moisture that might be present as this could cause the pewter to bubble and splash out of the former. Roger also warned against using an oily wood as this would also react against the melted pewter.

During the session, there were various aspects of turning the pewter and inlaying a pattern which was explained along with the type of tools used for shaping the project.

The turned pewter is then polished down to 2000 grit with some wet and dry and then with the addition of T-cut to finish the polishing process. It was also stated that the use of Yorkshire Grit could be used the White container type.

Our thanks go to Roger for being the first turner to be captured digitally by the new set up.

I for one thought that the event went very well for a first-time event and was also a steep learning curve for both Rob and Ian to get to grips with the audio and video side of things, there is room for improvement to give a better viewing aspect and enjoyment experience. It is hoped that we will have learned a little more about the computer system for the future demonstrations and be able to record them and use them on the club website for everyone to see again. At the same time, now we have the full complement of the zoom facilities we are still getting to grips with the added aspect of what can be used.

Hopefully for next month we will have enticed another club member who is willing to undergo the inspection of the lens and get used to talking through a mike and camera.

We will also be maintaining our chin wag sessions on a regular basis, so we can still discuss things as to what may be accomplished with the zoom demonstrations.

Additional Information for Pewter.

Pewter can be beautifully crafted, and is relatively easy to work with

Warning

Melt pewter in a well-ventilated area with access to incoming fresh air. Some pewter contains a high concentration of lead, which when melted can be toxic to inhale.
Never allow water to splash into your melting pewter.

A splash of water can cause a burst of steam to fly up onto your face or hands, potentially causing serious injury.

Step 1

Place your pewter pieces into a stove-safe pot or pan.

Step 2

Turn the heat onto your stove up to its highest setting. Temperatures allowed by stoves vary depending on make and source of heat; your goal is to reach pewter’s melting point, Depending on the exact mix of metals, pewter has a melting point of 225 to 240 C (437 to 464 degrees F).

Step 3

Allow the metal to melt slowly. Remember that unlike ice, pewter does not melt gradually. The pewter will not begin to liquefy until the full piece has reached its melting point. Be patient during the melting process. Melting times will vary depending on how much pewter you melt and the temperature of your stove.

Step 4

Gently stir the melting pewter with a wooden utensil. This will help the heat to distribute more evenly.

The cuttlefish bone can also be used to form a mould.

Tip

Pewter can also easily be melted over a fire, or by using a blow torch.