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Member postings for Les Jones 1

Here is a list of all the postings Les Jones 1 has made in our forums. Click on a thread name to jump to the thread.

<< First < Prev 108 109 110 111 112 113 114 115 Next > Last >>
Thread: Signature Files
15/01/2010 11:16:13
Hi John,
                 Last night I tried to find a way to assign a text string to a hotkey or function key.
I did not find any suitable method.
I have just tried your suggestion and it works great. I did have some difficulty getting rid of the logo it was adding to the bottom line but leaving the user name box blank seemed to solve this.  This message was finished using your method.
 
Regards
Les
(Ormskirk Lancs.)
14/01/2010 20:07:55
Hi Keith,
                   You could just create a template file with Notepad with the text you have in your post. Save this file on the desktop (Or anywhere that suits.) When you are ready to post a message first open this text document, highlight all of it. (Put the curser at the start of the file, hold the left mouse key down and drag the curser to the end of the text and release the mouse key.) Now press control C on the keyboard. (This copies it to the past buffer.) Now put the curser in the post message box and press control V. This will put a copy of the template in the message box. Then just type the rest of the message.
Les.
Thread: Converting 3MT Tang Arbor for drawbar
09/01/2010 09:37:39
Hi Peter,
                 If you are only using the chuck for drilling you should not need a draw bar. Using a chuck for milling is considered bad practice as the body of the chuck is also held onto the  MT3 shank with a taper. Even with a draw bar holding the shank into the spindle the chuck body can become detached from the shank with the lateral forces of milling. I do not think there can be a definite answer to your question. I think some will be case hardened and some hardened through. I would try grinding a small amount off the tang and then see if it can be filed.
Les.
Thread: Power hacksaw
08/01/2010 17:55:46
Hi Bizbilder,
                        To insert pictures you have to upload them to the site first using the "My Photos" option at the top of the page. Once they are in there you can insert them into your message. It took me a long time to work this out at first.
Les.
Thread: Workshop Heating
07/01/2010 10:35:31
Hi Donald,
                     This is from what I remember of chemistry at school about 48 years ago. Before making any decisions wait and see if anyone  disagrees with my reply. Even with a heater in my workshop I am avoiding working down there at the moment.
Les.
07/01/2010 09:56:46
Hi Donald,
                     A heater using catalytic burning will produce exactly the same amount  of water and carbon dioxide from a given quantity of propane as normal burning and the quantity of heat produced will be the same. (Assuming complete combustion in both cases. ie the carbon component all being turned into carbon dioxide not some carbon monoxide.) It is the same chemical reaction but taking place at a lower temperature. I think John Haine's suggestion of trying a caravan shop to buy a balanced flue wall heater to run on propane is the best idea.
Les.
Thread: Making a Z-Axis DRO on the cheap
06/01/2010 13:25:27
Hi Alvin,
                 The comments by Kwil and Meyrick are correct about the lack of accuracy. I find them good enough for most of the work I do and are better than not having any kind of DRO. The scales on the main Z axis and X axis are from Machine DRO or Chronos and work on the same principle to the calipers. (With the same potential for inaccuracy.) An even cheaper solution I used before buying the scales was to use rotary encoders on the leadscrews initially connected to a home made display (Using a PIC16F628A and 2 * 16 line LCD display.) and later to a Schumatech DRO350. The DRO350 is a design you can build yourself from a kit or just buy the PCB an and buy the components elsewhere.
The rotary encoders here on motors removed from DEC LA36 or LA180 printers.(1980's vintage.)
Les.
Thread: Microscope objective thread
06/01/2010 13:04:38
Hi Meyrick & John,
                                   Meyrick I assume that you mean to put the two threaded parts together and set up a dial gauge to measure how much one part moves with respect to the other for a number of turns rotation.
Les.
Thread: Making a Z-Axis DRO on the cheap
06/01/2010 10:35:25
Hi Alvin,
                This is how I mounted a modified 150 mm caliper to show the quill position on my Sieg X3 mill.
 
 
 
 
 

 
The top mounting is to the end of the depth gauge to give some flexibility in the mounting.This is to allow for the fact that the quill rotates a small amount due to play in the locating key. Other in the album show the other scale mountings.
Les.
Thread: Workshop Heating
02/01/2010 20:37:04
I have a balanced flue wall heater in my workshop. This is relatively cheap to run and the combustion products go outside so it does not cause any increase in humidity. I do not know if they are available to run on propane.
Les.
Thread: why cant you silver solder in the workshop?
01/01/2010 17:58:58
Hi Dave,
                 I have not seen that recommendation but it does make sense as burning any hydrocarbon (Propane, butane, paraffin etc) produces water vapour and carbon dioxide. The water vapour will increase the humidity and water may condense out on cold metal.
 I suppose this would rule out boiling a kettle to make a cup of tea in the workshop.
Les. 
Thread: Myford Super7 Leadscrew Accuracy problem
29/12/2009 18:35:41
One way the pitch over several turns could be measured would be to use a digital caliper  with one jaw clamped in the toolpost and the other jaw (Or end of the depth gauge.) clamped to the headstock or tailstock. Care would have to be taken that the caliper beam was parallel to the axis of the lathe. This could be set up using a dial gauge.
Les.
Thread: Current issue - Picture of last issue still on web page.
29/12/2009 16:30:10
Thanks David. That is quick service !
Les.
29/12/2009 15:21:34
I have just noticed that although the contents of the current issue of "Model Engineers Workshop" are show correctly on the website the picture shows the last issue. I assume the magazine staff have not noticed this error.
Les.
Thread: Choice of small milling machine
28/12/2009 09:10:48
Hi Meyrick,
                     I did use scales from Machine DRO and Chronos for the long scales but modified calipers for scales less than eight inches. For the compound slide on the lathe I found the four inch calipers from Arc Euro to be the smallest cross section to save space.
I have also built a display for the Z axis which displays the main Z axis on one line, the quill on another line and the combined value on the third line.
Les.

Edited By Les Jones 1 on 28/12/2009 09:23:49

Thread: Iron Castings
28/12/2009 08:49:42
Hi John,
                I gave you duff information in my last post. I was going from memory when I said he lived near Epsom. I was reading his book on building a furnace and realised I had made a mistake. He lives near Epping which I think will be too far away from you.
Sorry for the error.
Les.
Thread: Choice of small milling machine
27/12/2009 16:02:57
Hi Robin,
                     I would second Meyricks  comment about a DRO on the quill but I would go further in suggesting a DRO  on all axis. There is a DIY DRO design that does not cost too much and uses scales based on digital calipers. (Or at more cost glass scales can be used.) I have built two of these, one for my lathe and one for my mill. They make life so much easier. The designers website is Shumatech The printed circuit boards and components are available in the UK from
Les.
Thread: Contacting a forum member
23/12/2009 11:28:29
Hi John,
                  To send the test message to I just put in your user name  (modeng2000) I also received your reply to the message. It could be that Robert does not realise there is a message for him. As I said I only realised there was tis messaging system after a few weeks. To contact another member off line I had resorted to putting an email address in  the post. (If you do this do not use your mail email address - keep a web based one for this purpose and write the word at instead of using the @ sign. This is to stop automated email address gathering programs collecting it and bombarding it with spam.)
Les
23/12/2009 09:14:32
Hi again John,
                              I have sent a test message to you using the method I suggested to see if it works.
Les.
23/12/2009 09:06:08
Hi John,
                I am not sure if the will work. While you are logged in click on my messages then click on "compose new message". I think this will put the message in his messages.
The problem is he may not look at his messages. I only found the messages option by accident and found I had a message that had been there for weeks.
Les.
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