Here is a list of all the postings Trevor Drabble has made in our forums. Click on a thread name to jump to the thread.
|Thread: Sharpening Milling cutters|
Edited By Trevor Drabble on 20/10/2013 19:45:24
|Thread: Can soluble cutting oil damage equipment?|
I believe you are quite right to have some concerns. You obviously realise that the main problem with this product is that the oil never ACTUALLY combines with the water , but rather it lies in suspension, and therein is the nub of the conundrum . I also have experienced staining on the slideways on my then newly factory reconditioned Myford. The stains were quickly removed by stoning and the coolant system changed to oil , a decision I have never regreted . I do however continue to use soluable oil on my Kennedy power hacksaw where it is perfectly suitable , principaly because it is totally free draining and is regulalry maintained. Please also be aware that use of soluable oil also brings with it some very real risks associated with Legionellea , particulalry where intermittant usage is envisaged and as briefly refered to in my post of 21/01/2013 under the thread of "Cheap coolant system for a mini-mill ".
|Thread: between the shoulder measurements for Myford Super 7 feet bolt holes|
You can find all the info you want in both tabular and drawing forms by going to G&M Tools web page -- makers -- myford -- info (specs).**LINK**
|Thread: Er collets ?|
Suggest you give Dave of D&J Workholding **LINK** a call. Very helpful chap. Most certainly not the cheapest, BUT excellent German quality options and massive range incl ER 40. They also do many types of holders including parallel and MT. Suggest better to buy than to start making.
Edited By Trevor Drabble on 02/09/2013 16:08:05
|Thread: electrical bonding aluminium track|
Wherever you have an electrical joint involving aluminium, whether with a similar or dissimilar mate, then the mating surfaces of the aluminiumshould be scratched through the oxide layer to reveal the base metal and immediately a correct aluminium jointing compound should be appied before the surface oxidises again. The joint whether crimped or compressed may then be completed. Such pastes are/were available from larger electrical wholesalers, particularly those dealing with HV equipment.
|Thread: Kit locomotives|
Please note that Maxitrack also produce locos in different gauges which are availble either as a kit or ready to run.
|Thread: Drilling 316 stainless|
Suggest you look at Cromwell Tools who list suitable drills for stainless from both Guhring and Swiss+Tech, with the 1060 range of ST ones having an offer price of only £2.90ea +VAT in the 2008 catalogue.
|Thread: Machinery's Handbook|
Have got a number of these to sell. Will check prices on flea-bay. Would aim to be below these, and will then PM you.
|Thread: Percival Marshall Model Engineer series books Nos 1 to 38|
If you are still interested, I have 2 original copies of this book , each with a slighly different cover.
|Thread: Overloading a Chester Champion V20 Mill|
For your information , in the very good Newton Tesla variable speed package I have on my lathe it states quite clearly that the motor must not be run for long periods below 800 rpm , obviously to avoid over-heating (as per Jasons comment above ) which is why I still use the change belts.
Also, not familiar with your machine , so would ask what types of protection are there on the machine in order to try and prevent the overheating , and since this would appear to be a regular problem , I wonder if someone does a mod whereby a thermal protection device may easily be fitted to the board ? I have in mind as a precident the improved American made circuit boards for the mini lathes.
|Thread: Weir Pump Design|
You may find looking at the vertical steam pumps supplied by Southworth Engines ( 0114 281 8595) will be of use.
Hope this helps.
|Thread: Bandsaw Spares.|
Suggest you contact Nutool direct. They are (were ) in Doncaster at DN6 7DU and are (were) on 01302 721791. Last time I contacted them some time ago they were very helpful.
Hope this helps.
|Thread: Another motor wiring question|
Have you tried actually talking to Parvalux ? When I had a similar problem a few years ago , I found them extremely helpful.
|Thread: Model engineering ideas|
Since you have limited facilities, you may find my Classified advert of 05/05/2013 on these pages of potential interest. It is an old design for a 6cc single cylinder vertical spark ignition engine , especially so since it also includes the construction book.
|Thread: Help required in South/West Yorkshire Area|
I am in Barnsley and prepared to offer any help required.
|Thread: er32 collet holder|
I faced exactly the same problem as yourself with my ER32 holder, but since one of the reasons I chose my Myford VMB milling machine was because of the 3000 RPM top speed, the solution was relatively simple. I modified an R8 stub arbour to accept a grinding wheel I had in stock , then set up the collet holder vertically onto an angle plate on the milling macine table, protected all exposed machined surfaces, installed a front safety guard for myself, and then, ensuring I was below the MOS, ground a pair of flats on the holder body to suit a Clarkson collet chuck spanner I had in stock.. One thing I did particularly ensure was that I only presented the holder to the wheel AGAINST the direction of rotation since I did not want it to grab.
Hope you will find this info of some use.
|Thread: Grease gun for oil.|
Chris, A little more information for you.Cromwell Tools are listing a Lumatic 31650 grease/oil gun, Part No CTL 5404526B, for £15.59 incl VAT.
|Thread: Harrogate 2013|
|Thread: Engine indicators|
My Dobbie McInnes indicator has a 1.064" dia x 16TPI male thread on the bottom of the body, which I believe may be a Pg 21 conduit thread. Included in the set is a separate threaded removable collar for fitting the body to the engine. This collar has a matching internal thread to the body for half its length, whilst the other half is threaded to accept a 1.171" dia x 10 TPI whitworth form thread.
Hope this helps.
|Thread: Harrogate 2013|
The skeleton rower was Harrogate 2010. Have got a couple of pictures of it, but am having trouble uploading the first one. As and when it works I'll post them.
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.