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Member postings for DMB

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

Thread: Classified Adds
04/07/2011 23:49:47
I cannot understand the need to use twitter or facebook when we already have this forum to discuss things. From what I have read, facebook appears to be a security nightmare and I`m reluctant to use it. I do read other mags, e.g., Computeractive to keep up with whats going on.
John
04/07/2011 23:30:50
Wow! Since my earlier post around 11.30, I can now go in to For Sale or wanteds and they`re all presented as they should be. Thank you David.
John
04/07/2011 11:30:32
I have had the same over-written ads prob for a long time. Complained but no listens! Wots new?
Have given up trying, just do same as "Weary" and all is fine.
Just seems a pity that it cant apparently be sorted out properly.
John
Thread: Dore Westbury Milling Machine
28/06/2011 09:34:02
Hi Adrian,
Watch out for that green dust. Even if its not carcinogenic, it will still do you no good to breath it, or ANY other dust. Use a mask, including when you`ve finished and sweeping up.
John.
Thread: ME bound volume reprints
25/06/2011 22:53:24
Hi Yanna,
I am interested in very early vols., from no. 1 up to 1929.
 
John.
Thread: Subscription question
25/06/2011 22:25:23
I did exactly the same as Bob Lamb earlier this year and had £50 taken. Was going to complain like Bob but never got around to it as I thought that it looked to good to be true and almost certainly referred to the online price, so did not do anything. Thought it was a bit of a cheek though, the way it was done. Misleading Advertising.
 
John
Thread: Mixing flux
02/06/2011 00:04:45
Hi Wallace,
You can almost! Actually,it can be obtained in a hyperdermic syringe (no needle).
John.
Thread: Axle box lubrication
02/06/2011 00:02:11
Hi Robert,
Look at photos (or the real thing) and notice all the little yellow boxes, on fronts of tanks, GWR and on tops of splashers or on running board, other Rly. Cos. Brass boxes with a lid and say, 3 pipes leading to A-boxes. A wick was poked in the top of the pipe inside the oil box and other end laid in box to soak up oil. Hope this helps.
John.
Thread: Paint ????
24/05/2011 11:26:29
Hi all,
I have seen the most fantastic finish on a large model aircraft. It looked exhibition quality - perfect! The owner said he warmed the paint before application, making it much more runny. I think he said it was ordinary Humbrol brushed on, but I`m not sure.
Thread: Steam Boat Ban
27/04/2011 14:05:38
`Metro` newspaper today, page 17, is a photo of a dejected Nick Clark apparently seated at a table with his little steamboat on a typical model boat stand. In length, it looks about 3" longer than the width of his shoulders with a very small vertical boiler. He is quoted as saying top speed is 3 knots.High pressure boilers, IanT? Idont think so.
Good solution seems to be to start a campaign to remove central heating boilers from all council offices!
Thread: Tony Jeffree's Grinder letter in MEW175
19/04/2011 15:54:21
In answer to Tony`s letter; perhaps I am nowhere near unique in quoting SWMBO,
 
"Wot, ANOTHER project? How many is that? "
 
Maybe those comments are related to ones like, "What have you got that for?"
 
Familiar ring to lots of Model Engineers?
Thread: Harrogate model engineering 2011 ?
14/04/2011 09:09:45
Sorry, forgot to say they also give exact dates, but try same info from more than one for corroboration since one of them got it wrong last year but NOT one of those mentioned above.
14/04/2011 09:07:22
Hello all,
Try my usual trick for xbns. Call up Warco/Myford/Reeves/Blackgates and they will tell you on their websites which xbns they will attend for months ahead.
Thread: Paint Stripper
14/04/2011 00:22:17
Wot more interference from politcians? The sooner we dump Brussels mob and go our own way like we did for 1000 years, the better!
Back on topic, has anyone tried alternatives, like say gas jet paint burner instead of `cold` chemical?
Thread: Horizontal Milling With Inclinable Head Machine
14/04/2011 00:11:02
Run out of space!
I tend to use largest dia endmill or slotdrill I can for max metal removal, so its usually 5/8"D for which the book recommends as follows:-
Endmills: Stainless etc 200RPM, 1 3/8"/min, Bronze etc., 385RPM, 3 1/8"/min, Ali,Brass,
1600RPM, 13"/min.
Slotdrills: Stainless etc, 240RPM, 1 1/2"/min, Bronze etc, 600RPM, 5 1/4"/min, Ali, Brass, 1800RPM, 15"/min.
Hope all the above gets you off to a flying start!
John.
14/04/2011 00:00:45
Hi Dunc,
Further to prev., just dug out Tubal Cain`s Model Engineers Handbook, 3rd Ed., page 5.12. Max cut for endmills, depth = same as dia of cutter, width of cut = dia. divided by 4 .
Slot drills have 2 flutes and cutting edges of unequal size, the larger sweeps across the axial centre, enabling it to plunge - cut full diameter for width of cut and depth, equal to half the diameter. Now it gets complicated!
4 - flute endmills :-
Stainless, Silver Steel, Monel Metal,1/2" dia cutter, speed = 250 and feed 2"/minute. 1/4" cutter, 500 RPM, feed 7/8"/min.For 1/8" dia., 1000 RPM, feed, 3/8"/min.
Bronze, Cast Iron, Copper, Gunmetal , Phos. Bronze, Mild steel, a 1/2"D = 480RPM, 3"/min., 1/4"D = 960RPM, 1 3/4"/min., 1/8"D = 1920RPM, 1"/min.
Ali.,Brass, 1/2"D = 2000RPM, 13"/min, 1/4"D = 4000RPM, 8"/min, 1/8"D = max. avail.
Slot Drills:-
Stainless and Silver Steels, Monel Metal, 1/2"D = 300RPM, 1 1/2"/min, 1/4"D = 600RPM, 1"/min, 1/8"D = 1200RPM, 1/2"/min.
Bronze, etc., 1/2"D = 800RPM, 5 1/4"/min, 1/4"D = 1600RPM, 3"/min, 1/8"D = 3200RPM, 1 5/8"/min.
Ali, Brass, 1/2"D=2200RPM, 15"/min, 1/4"D=4500RPM, 9"/min, 1/8"D= max avail.
13/04/2011 23:16:44
Hi Dunc,
Just seen your posting and as no - one responded so far, I`ve decided to risk looking silly! Firstly, I am a little confused but I think you are saying that you have a combination horizontal and vertical mill, frequently and incorrectly called, "universal." I have had a look at warco`s site and their WM18 mill and it is a vertical column with a vertical head which can be swung from side to side, clock - pendulum style, if you like.
This type takes endmills and slot drills, preferably screwed shank type properly screwed in to a proper milling chuck to ensure they are secure and dont wind themselves out, causing mayhem. An overarm is only used on a hrizontal mill to support an outboard bearing for the horiz. spindle which carries a side and face cutter. These cutters with their multiple teeth around the periphery, makes them resemble a water wheel! The vert. mill takes its different type of cutters in a milling chuck and they dont need any overarm and outboard bearing. Get a Clarkson milling chuck with correct MT to suit your mill and read some books to find out speeds and feeds. These depend on cutter diameter and cutting speed of metal being butchered, Brass, Ali., Mild Steel, Cast Iron, all different. As speeds infintely variable, 50 - 2500, you should get perfect speed for job in hand.
Good luck, John.
Thread: Wooden workshop floor
13/04/2011 10:11:52
At a previous address where my parents kept chickens during the last war and in subsequent years, we had occasional rat infestations under sheds, including my workshop. I understand that rats keep on coming back looking for eggs for food and like most animals have a very sensitive sense of smell so can detect where chickens have been years before. I solved problem by concreting over the ground under the workshop.
The heavy timbers used for flooring still failed to stop the Myford from rocking so removed wood floor from that area and built up a concrete block to stand lathe on - prob. solved! As for insects, seal shed as air-tightly as possible after lighting an anti - woodworm smoke canister. Its poisonous, obviously, but it kills anything flying/crawling/ burrowing. Flies, spiders, woodlice, woodworm, wasps, mosquitos, over-wintering snails, the lot!
Thread: injector design
31/03/2011 18:14:03
I remember a fellow club member, many years ago, demonstrated his experimental injector where the steam cone could be moved in and out as it was on a screw thread with a hexagon, to fit a spanner. It worked, at various positions according to the gauge pressure.
Thread: WARCO
31/03/2011 18:00:49
I have also bought various items from Warco which have proved to be satisfactory. I would recommend the company on its products and especially, Roger Warrens customer service attitude. Usual disclaimers - just a very happy customer.
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