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Member postings for Ian Johnson 1

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

Thread: North West 200 coverage
15/05/2019 22:22:12

I'm following the Northwest 200 via Isle of Man TT on Twitter, just found out that TT legend Michael Rutter will be riding a Honda RC213V-S GP replica in Saturdays Superbike race! should be fun on a road circuit! There is also the all new Ducati V4 Panigale and Norton too.

Thanks for the heads up. Racing is on Thursday and Saturday

Ian

Thread: Irish Road Racing season on TV
01/05/2019 22:17:32

Thanks for the heads up, it's good that the BBC NI are doing the coverage. I always watch the TT races on ITV4, they do some brilliant on-bike footage, usually the day after the race, but this year I think they have plans to do live coverage which will be even better.

Ian

Thread: Result - the 2019 Stevenson Trophy
01/05/2019 22:00:25

I just voted before I logged in. So, can anyone vote even if they are not members of this forum?

Ian

Thread: Further Adventures with the Sieg KX3 & KX1
16/04/2019 23:35:14

It's coming together nicely Jason. Good idea to use Corian as a filler, I don't suppose it matters what its made of, as long as it does the job and looks good when finished.

Had to Google Corian, never used it before, looks like good stuff. Messy though!

Ian

Thread: Notre Dame
16/04/2019 11:44:52
Posted by Mike Poole on 16/04/2019 01:10:53:

A little clarification for you Hopper, the National Mototorcycle museum is at Bickenhill near Birmingham and the National Motor Museum is at Beaulieu, the motorcycle one burnt down but is now near fully restored. Just had an entertaining 3 hour talk from Norman Hyde on his days as a development engineer for Triumph which seemed a good excuse to race Triumphs, they had great success for a low budget operation with Doug Hele leading the team.

Mike

You are right Mike I misread the post, I didn't notice the Beaulieu reference

15/04/2019 23:48:44

Yes it's near to the National Exhibition Centre (NEC) Birmingham, as far as i know the fire spread through the roof ceiling voids, no fire breaks. They did a great job of restoring the burnt out classic motorcycles.

15/04/2019 22:53:54

I've been following this on Twitter, terrible thing to happen, but entirely preventable. I can think of three recent fires involving 'national treasures' all caused by poor fire controls during restoration.

Windsor Castle fire, Charles Rennie Macintosh Art School in Glasgow and The Cutty Sark.

Surely they must be worth protecting with better fire precautions?

Thread: Further Adventures with the Sieg KX3 & KX1
14/04/2019 15:00:31

Good explanation of adaptive machining thanks Barrie. I am using Vectric Vcarve and don't think they have an adaptive strategy, unless I'm not looking hard enough?

And I too have also come to the conclusion that small cutters and more faster cuts are the best way to tackle CNC milling, less stress on the machine, especially on a little hobby mill. Apart from a fly cutter and edge finder, I very rarely use any cutter over 6mm dia now, there is no need to!

Ian

Thread: Hi, Toolmaker / CNC Programmer. Merseyside
12/04/2019 23:08:28

I still do machining Karl, although it's small hobby stuff now in my garage with small lathe and mill, with a CNC mill all bench top. I've had some career changes but when I was on the tools it was all big heavy chemical plant machining, pump shafts, railway loco wheels, heat ex-changers, pump casings, relief valves, etc, in every conceivable material you can think of. We machined everything really. Probably very much like you want to do.

Ian

12/04/2019 21:22:24

Hi Karl I'm in Cheshire so not too far from you, and it's great to see the next generation of engineering talent appreciating the old skills. When I did my apprenticeship NC/CNC were just becoming more common in engineering workshops (in ours anyway!).

It's a great time to start an engineering company, STEM training in schools is really being promoted, ensuring a pool of workers. Grants and loans are available for start ups especially in the advanced manufacturing in the Liverpool region. There are loads of specialist CNC machining and engineering companies in the area such as Maxton in Frodsham doing very well in motorbike racing suspension. Go for it!

Ian

Thread: Further Adventures with the Sieg KX3 & KX1
10/04/2019 12:08:47
Posted by Andrew Johnston on 10/04/2019 11:27:45:

In my early days of CNC I started off by touching off each tool and noting the offset. However, that got tedious rather quickly, especially when I forgot to type in the offset when changing tools.

I now use a master tool and an electronic tool height setter. The master tool (tool 0) is simply a length of silver steel with a rounded end, on the left in this picture:

cnc_tooling.jpg

The sequence is:

  • Touch off the master tool on the table and zero Z
  • Use the electronic tool height gauge to measure each tool against the master tool and automatically fill the tool table. Measuring each tool is a one button push on the screen
  • Touch off the master tool on the fixture or work, depending upon where the zero height reference was set in CAM
  • Set X & Y zeros
  • Start machining!

Andrew

I like that method Andrew, usually I take the Z offset from the longest tool, but having one dedicated master tool is a good idea. The only problem I can see is a restriction on Z height on my KX1. Are you using Path Pilot they look like Tormach tool holders?

Ian

08/04/2019 12:15:42

Some info for those just starting out with the KX1/3 I started out running my KX1 on Windows 7 professional in XP mode, and that worked great ..... until the tower PC died!

I am now running my KX1 on Windows 7 32 bit on another tower PC, because at the time I couldn't find a suitable XP system, and so far so good, everything is behaving as it should. After I bought the tower PC I found out that standard Windows 7 cannot be run in XP mode! But all is okay.

Ian

07/04/2019 22:24:50

Looking good Jason, thinking of the machining sequence is half the battle with CNC.

I've been trying to get my head around my 4th axis on the KX1 recently, I've hand written a couple of little programs to test it out in Acetal. One was an 18 splined knob, another was a seven sided nut, chamfer on all sides, spot drilled on all sides, and a shoulder was milled into it using the rotary axis. I'm gradually sussing out how much can be done on the 4th axis. The Seven sided nut turned out really good too, using 51.43 degrees gave only 0.01 error.

Ian

Thread: Machinery Directive and CE marking
04/04/2019 23:23:00

This is a classic case of over thinking a non existent issue. Most regulations are for the employer to adhere to, we can do pretty much as we please in our own homes. If we were subject to the PUWER regs for example, I would think 99% of us would be in court telling the judge why we took the machine guard off! You can work on top of your roof and not bother about the work at height regs. Dig a big hole and not bother about the confined space regs etc.

We are not expected to know or adhere to he industrial and employment laws, but If you are selling stuff that is a different matter altogether.

Most hobbyists in the UK will probably fall foul of the Council environmental officer and local by-laws, noise and nuisance laws

And It's always better to beg forgiveness than beg permission!wink

Thread: MACH 3 Display Question
30/03/2019 16:06:23

Go large! For Mach3 I use the 16:9 display on my 22inch TV monitor (nicked from our spare bedroom!) and have the jog screen in the gap on the right of the screen. If the Mach3 screens are 'fitted' to the screen size they do look elongated and odd! But you may need to get new screen sets to support a touch screen.

My version came from Arc too, but I also got the licence for the full program, the locked down version has a limited number of lines of code if I remember rightly?

While I'm here I'll hi-jack the thread! laugh Does anyone know how to make the jog screen stick on the screen? Because every time I change screens such as going to the offset page, the jog screen disappears! Pressing 'Tab' gets it back again but it is slightly annoying!

Ian

Thread: Chinese 7x10 lathe
30/03/2019 15:23:58

Hi Ian I've had my Mini Lathe for many years now and haven't broken it yet, despite regular use and doing some relatively heavy machining on it. It's a Warco version, 240V (with a British plug), with a very good USA made variable speed main circuit board, although I don't think they supply this model now. And as the name implies it is a small lathe with a saddle, top slide, cross slide, tail stock etc. It has 300mm between centres, a newer model comes with 350mm between centres and a larger 3 jaw chuck. Digital dials are available too.

You may need to improve the fit and finish of the gibs and maybe scrape the saddle onto the bed, but they are really good little lathes, and light enough for one person to pick up and carry into a garage or box room. Even though I would like a bigger lathe, for the size of my models and garage space it is an ideal lathe. Don't expect it to be a tool room quality lathe though!

Ian

Thread: KX1 CNC Mill Clearance Offer
26/03/2019 15:20:39

Took a while to move them, but all sold now. Thank you everyone. yes

Ketan at ARC.

That's good news Ketan I'm sure the new owners will be very pleased with them. I've had my KX1 for a while now, it's a great little machine.

Ian

Thread: I want one!
19/03/2019 19:08:16

Just watched the video on the ITV tea time news! Busy little mouse!

Thread: Toolroom lathe?
19/03/2019 19:00:26

In my experience I can't see any difference in a so called 'Toolroom' lathe or a shop floor lathe. On the shop floor I have operated Dean Smith & Grace lathes with all the fancy gadgets you could wish for. DSG's are renowned for their precision and bullet proof build quality, and could be described as suitable for a 'Toolroom'. So why would a company hide away a top notch machine in a toolroom, when it would be far more productive on the shop floor?

The only difference I can see is that shop floor lathes are cleaned. Toolroom lathes are cleaned and polished! laugh

Ian

Thread: KX1 CNC Mill Clearance Offer
19/03/2019 13:57:33

So! this KX1 / KX3 clearance offer. Has anyone bought one yet?

I would love to buy another KX1 but haven't got the space!

As for CNC versus manual, I enjoy doing both in my little workshop. Maybe it's because I was machining in industry when the first wave of proper CNC machines appeared in the early eighties in our workshop. TI Matrix CNC lathes and a huge Kearns Richards CNC HBM. All mixed in with NC and manual machines.

The next wave of model engineers will be using additive manufacturing techniques, laser cutting, CNC with multiple axis, sliding heads, robots and more! Our hobby is rapidly evolving, and I think it's got a bright future.

Ian

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