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Member postings for Richard brown 1

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

Thread: What Did You Do Today 2019
08/03/2019 20:18:02

Phil

I think angle grinders are in the three most dangerous things you can hold after hand grenades and chainsaws.

Thread: Brian Perkins
08/03/2019 20:12:40

I agree, a great modeller and a nice chap too. I remember having a talk to him at a show a few years back, I left full of enthusiasm. Thoughts are with the family and friends.

Rich

Thread: Metal Cutting Power Saw
06/03/2019 08:41:43

Ron what about a kennedy power hacksaw. Its small enough to put under a bench and get out when needed

Thread: Vickers Bl 8 inch Howitzer cannon of 1917
26/02/2019 12:27:21

Mal

Its an 800lb palliser shot copied from the dimensions in the handbook. Yes i will black it put in the brass studs and then make a little shell barrow. Just for a bit of fun.

Regards rich.

25/02/2019 15:33:27

Mal

Nice shell. Here's a 12.5 inch RML paperweight I have been making.

Regards Rich

img_5468.jpg

p1040417.jpg

Thread: National Trust and Gift Aid
17/02/2019 06:54:07

Robin

lm no expert but I think the other way they could claim it is if they give you a years free entry ( like the tank museum). But as they don't want to give you that then I think you make a donation. They don't get gift aid from me for this reason. But tank museum and the others do get it from me.

rich

Thread: bunging up hole in CI
12/02/2019 16:38:41

Having gone to the effort of making the hole Is it worth keeping the spare hole.

Thread: Metric thread cutting in a lathe
25/01/2019 17:45:14
One big mistake i made was to set my cross slide over to 30 degrees and the thread was very odd. It took a while to work out that i needed to set it to 60 degrees on my lathe. Seems obvious now but it didn't at the time.
25/01/2019 12:39:47

Success!

Just kept trying it as I got close until I got a nice fit. When I said fairly important it was a ball screw for converting my SX3 to CNC.

Regards to all

Rich

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25/01/2019 10:04:49

I work to to tolerances of things like a Bee Space or a Nad.

I think I will go just slightly under 12mm and then go in by 0.61mm and see how it goes.

Regards

Rich

25/01/2019 08:45:34
Thanks for the info but i have bought 12x1 locking nuts and it is mentioned in tables so it seems standard at first glance.
25/01/2019 07:43:10

Thanks for the replies you have all been very helpful.

With the 0.6134 x pitch I can now see that this will indeed cut down to the Minor core diameter in this case 10.77 so that's that solved also.

Thanks again

Rich

24/01/2019 22:36:15

Hi

Sorry for this basic question but I have only cut 1 thread in a lathe and now need to do something fairly important.

I know how to set the tool the cross slide etc but my problem is more to do with lack of knowledge of threads.

Am I correct in saying that to cut a 12x1mm thread I have to turn the bar down to 11.8mm? I'm asking because in The Model Engineers Handbook by Tubal Cain he shows a drawing and I can just about see it says 0.1P for the amount of thread crest that is taken off.

Is it better to take this off the diameter before I start or does it not matter? I am thinking I should take it off before or I will end up not knowing if I should cut the thread deeper or take some of the diameter to get the nut to fit! Some advice would be great.

One last question, How do I work out how deep I need to cut in order to get the thread properly formed. Is it simply 0.86mm as he seems to show what looks like 0.86P. Or does it have something to do with the Minor Core diameter that is listed in the tables, which in this case is shown as 10.77mm

Sorry if this seems basic but I have always stayed well away from threading in the lathe through lack of knowledge but now I need to start doing some.

Thanks for any help you can give

Rich

Thread: Autocad 2000 Cant draw at a chosen angle.
17/01/2019 09:00:39
Thanks for the help as Robin said it was direction control somehow had 330 in it and not 0.
regards to all
Rich
16/01/2019 20:07:49

I have found it now. Its in Format/Units/Drawing Units/Direction Control.

Thanks for the reply.

Rich

16/01/2019 19:24:01

Nigel

Hopefully this photo will explain it better.

It seems as though the angles are all rotated clockwise by about 30 degrees and I dont know how to set zero degrees horizontal? Thanks Rich

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16/01/2019 18:32:18

Hi

I am trying to draw a line 70mm long going down at 30 degress from the horizontal by using the command @70<30. The line is 70 long but always goes horizontal and to the right so it seems as though my zero degrees direction is going off at about the 4 o'clock position.

Does anyone know how to set the zero degrees into a horizontal position or even straight up?

Thanks

Thread: Gatwick Drone 'Attack'
09/01/2019 08:27:23

Imagine how easy it would be to disable the RAF quick reaction force, just fly a drone or two around the runways. And how long will it be before the local scum bags take out the police helicopters while their mates go out and do a nights work?

Thread: Completed Twin Inline IC Engine
03/01/2019 12:33:44

Steve
That is lovely. What other engines are on the shelf then?

Rich

Thread: HSS lathe tools
19/12/2018 11:56:40
To avoid wasting time grinding the hss blanks i rough them to shape with an angle grinder. Then finish with the bench grinder.
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