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Member postings for Paul Lousick

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

Thread: LED lighting
10/05/2015 23:12:12

My LED's are just connected to a 12v DC power supply from an old cordless phone.

Thread: Water Gauge blockage
10/05/2015 00:08:36

Hi Dennis,

Your strainer is probably not removing all of the dissolved solids and the blockage could be a calcium build-up. (very hard deposit, like the build-up in a coffee maker or a steam iron which has to be flushed with a cleaner to dissolve the calcium).

A gauge glass blow-down test should be performed at every start-up (and change of operator) to ensure that the passages are clear. Water sample tests and boiler blow-downs should be performed regularly to remove rubbish at the bottom of the boiler.

Paul.

Thread: How to measure bores
09/05/2015 11:08:40

Another option to telescopic gauges is a dial bore gauge. Available in different ranges and comes with a dial indicator.

Paulbore gauge.jpg

Thread: Reading a drawing - Radius
21/04/2015 13:21:41

Hi Nicholas,

That is what we are saying. The dimensions for the legs are missing and have not been dimensioned by whoever made the drawing. In Autocad I have to click on all of points than need dimensioning. In Solidworks I can automatically add all of the dimensions but the software does not always position the dimensions where I would like them and therefore prefer to do this manually.

Yes, R3 = 3mm radius

Paul.

Edited By Paul Lousick on 21/04/2015 13:23:28

21/04/2015 11:18:07

Not a failing of the drawing program but one of operator error.

CAD is only another tool and still requires the input from the drafter. Some packages can automatically dimension a part but it is normally left to the operator to correctly layout the drawing and dimensions. (Missing dimensions can also exist on hand made drawings.) This is one of the common problems with drawings, especially for model engines which are made by un-experienced operators.

You may be able to obtain the missing dimensions by using the mating parts.

Paul.

Thread: Lathe Milling Attachment - Disadvantages?
20/04/2015 08:32:09

3/4 of my work is done on a mill and trying to do this on a lathe with a mill attachment would take twice as long or would not be possible. My advice is to get the mill.

Best of luck with your model.

Paul.

Thread: Fusable plug for 5" gauge
15/04/2015 13:15:36

Extract from Australian model code for boilers. (max. pressure for models is 100 psi)

fusible plugs.jpg

Tin melts at 232 °C (450 °F) ,    Lead melts at 327.5 °C (621.5 °F)

Paul.

Edited By Paul Lousick on 15/04/2015 13:19:45

Thread: Holesaws for steel
15/04/2015 02:00:43

I had to cut a 100mm dia hole in 10mm plate and used a 25mm Rota broach to step drill a series of holes to the rough shape for the hole. Then bored the hole to the finished size.

Paul.

Thread: Silver Solder & Boiler Making - Australia
03/04/2015 07:31:59

Hi Nick,

I am building a welded steel boiler and am not familiar with silver soldering copper. Ask the question on http://www.tractiontalkforum.com in the model section. There are a couple of people from Oz who are building copper boilers. They should know what to use.

Paul.

Edited By Paul Lousick on 03/04/2015 07:32:30

Thread: New mini mill-which tools?
01/04/2015 04:19:41

Hi David,

Make sure that the tilting vice which you buy has a good locking arrangement for the tilt. I have a similar one which can move under heavy loads.

Paul.

Thread: A handy weed-eater
20/03/2015 04:19:44

I already have a smaller version of the machine in the video. I call it "shovel" and used it to transplant this "weed".

tree.jpg

Thread: Square Holes
20/03/2015 00:40:16

Hi Chris,

The bolts/rivet have a nut which is tightened.

I have changed the design for attaching the hornplates on my Ruston to comply with the details shown on the Aus. code. Our codeshows the hornplates attached to the bottom of the boiler (under the fire grate) and to a mounting plate in the upper side of the boiler. My inspector queried the original design and I decided not to cause any problems and change the design.

Paul.

19/03/2015 10:01:48

Thanks for the comments.

Michael G, No the square holes do not have to be completely square. I am bolting the hornplates of my traction engine to the boiler and want the head of the bolt to look like a round head rivet. To stop them turning, I am making the end of the bolt near the round head a square shape, similar to the square on a coach bolt (if that makes sense).

Michael C. The rotary broaching in the mill idea looks promising. Will give it a go.

Thanks everyone, Paul

Thread: Any Aussie subscribers here?
19/03/2015 08:19:53

My copy of the March MEW arrived today. I live in Sydney and normally receive it about the middle of the month. The newsagents get it about a week earlier. Problem is that they do not always have it in stock or have sold out.

I still get a regular delivery of the magazine, Just 2 weeks after it is released. No problem,

Paul.

Thread: Square Holes
19/03/2015 07:59:08

I would like a push broach but still expensive which is why I asked if anyone had made one.

Laser cutting is not an option as I already have the profiled plate. Just needs the holes.

Regards, Paul.

19/03/2015 04:04:33

I need to cut a number of 10mm square holes in 6mm MS plate (about 20) and the cost of a rotary broach is too expensive.

Has anyone made their own square push broach ?

Was also thinking of drilling a 10mm hole first then using a rotary broach tip held in a guide to punch the square holes with a press.

Paul.

Thread: Any Aussie subscribers here?
14/03/2015 22:27:02

My copy normally arrives about a week or so after the issue date but it appears in the newsagents much earlier.

Paul.

Thread: How to use a die?
14/03/2015 08:23:31

Hi Tom

S/S is harder to cut than mild steel. Cutters tend to rub the surface and not cut if not sharp enough.. Check that it is 3mm dia and not larger. Try adding a taper to the end of the rod, not just a small chamfer.

Paul.

Thread: Keeeping Machines Clean, New idea or Old?
08/03/2015 08:42:16

Mine is a work horse not a show pony but try to keep it reasonably clean and well oiled.

Thread: Building imperial locos in a metric world - confused!
05/03/2015 22:02:22

Hi Nick,

I had a similar problem with the traction engine which I am building. The drawings are imperial but I decided to work in metric because I already had a lot of metric tooling and I normally work in metres in my job. (easier than using fractions). You should also consider what size of material is available for making your model. Many have been changed to metric. The biggest problem I had was finding pipe to make my boiler barrel. The drawings specified 10" (254mm) outside diameter but the closest pipe that I could buy was 273mm OD. Consequently the size of many components had to be modified.

I converted the drawings to metric and re-drew everything to verify that modified parts would fit together. Other model engineers stay with imperial dimensions. Your choice.

Paul.

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