Brushs Laser Cutting and 3d Printing workbench

[Rob Pulham]

That looks excellent Phil

 

[Ian G]

There will be a lazer cutter demonstration at Scaleforum at the end of the month for those wishing to learn more.

Ian G

 

[BrushType4]

Now with a wash of paint. Pecan cream actually



The engraving of the brick courses is deep enough to take some light sanding, so while it does fit well, sanding the back of the join before glueing together and possibly the front afterwards will ensure a perfect fit.

It just needs those with greater ability to improve the brick and motor effect paint effect, but I'm happy with the actual laser cutting of the brick corners/finger joints now.

I'm going to recut this building with all the bits and build it up step by step and post here.

 

[alcazar]

That's pretty near invisible, except with a magnifying glass, or close-up photography.

 

[Eastsidepilot]

Phil,
Had any thoughts about air bricks ?, these were used on buildings that had timber floors and would add some nice detail to model buildings.

Col.

 

[BrushType4]

Phil,
Had any thoughts about air bricks ?, these were used on buildings that had timber floors and would add some nice detail to model buildings.

Col.

I have, and I've tried to draw a representation. Have you got any designs in your book?

 

[Eastsidepilot]

I have, and I've tried to draw a representation. Have you got any designs in your book?

I have got some info somewhere , I'll get back with it soon mate.

Col.

 

[BrushType4]

My Mum put some slates on the roof of the hut today.



And a commission in 4mm ready to be posted.




Everything is straight but dodgy iPhone camera.

 

[Overseer]

The valence looks good, as does the slate roof. One minor point, as well as the 'slate and a half' discussed earlier, there needs to be a tilting fillet under the bottom course of slates so it is at the same pitch as the rest of the roof and there should really be a row of shorter slates under the bottom visible course (but above the tilting fillet). I should be inspecting a slate roof being reslated on site today or next week and will try and get some photos to explain how they go together, although it is a contractor I haven't worked with before so it might be photos of what not to do.

 

[BrushType4]

Thanks Overseer, you can't see it in the photo but there is a row of slates under the bottom first courses running at right angles. I think that is as the prototype but pictures would be good.

This roof was reroofed post 1950 hence the lack of extra wide end slates.

 

[Overseer]

Stripping the roof won't be happening until next week but the scaffold is up so I pulled a slate or two out to show some of the detail of the original slate roof. This is an 1876 station building with 20 x 10 inch Welsh slate, probably Penrhyn. The roof has had lots of repairs over the years with a number of different slate types.

This is the south slope with lots of lichen growth. The large gaps and half width slate shouldn't be there but it does show the short slate nailed to the first batten and the lower end of the slates supported on the fascia or gutter board (set slightly higher than the battens to maintain the slope of the bottom course of slates - only two thicknesses of slate instead of 3 as on all the battens).

The same as the first photo, from a different angle.


The north slope of the roof, shows the lead hips and ridges with wood cored rolls to support the profile. There is more variation in colour than there should be due to replacement slates not matching the originals. the pitch of this roof is 29 degrees.

Hope that helps, should be able to take some photos of the new slate being installed next week.

 

[BrushType4]

That's great. I've designed and laid the roof with a double layer of slates on the bottom row and the slates are triple layered at the theoretical battens. In this case the battens therefor the lap is 1.75mm wide.

The difference I can see is that on my double layer, I've turned the lower layer by 90degrees as this is what I found on the web. Is this incorrect practice or is this like the half tiles at edge something that changed over time?

BTW, where is this building you are working on?

 

[Dog Star]

The difference I can see is that on my double layer, I've turned the lower layer by 90 degrees as this is what I found on the web. Is this incorrect practice or is this like the half tiles at edge something that changed over time?

What you have written is what I expect to see given that the lowest rows carry the most water so the fewer the vertical "joins" the better the resistance to water getting underneath the slates.

Much of what has been posted here about this subject is in line with the way in which the slates were laid on my 1890s property - duly noted when I replaced the slates, with new ones, circa 1975. The most interesting bit, not yet appearing here, was the method by which the flashing was fixed in the adjacent brick wall using skew-cut timber wedges.

 

[Overseer]

That's great. I've designed and laid the roof with a double layer of slates on the bottom row and the slates are triple layered at the theoretical battens. In the case the battens are 1.75mm wide.

The difference I can see is that on my double layer, I've turned the lower layer by 90degrees as this is what I found on the web. Is this incorrect practice or is this like the half tiles at edge something that changed over time?

BTW, where is this building you are working on?

Slates turned sideways for the bottom course are not good practice, but quite common. Most standard slate sizes are twice as long as the width and the lap was often specified as 3 inches, so as an example using 20" x 10" slate the under slates in the bottom course should be 13 inches long instead of 10" provided by sideways slate. Sideways slates would result in the bottom course looking short, unless they fudged the laps. The roof would be more likely to leak but you may not notice it as it will be over the wall or eaves but the rafters, wall plate, etc are more likely to rot over time. Traditionally the pitch of the roof determined the slate size used - less steep = larger slates, and the size of the lap also relates to the roof pitch. There are common dimensions in specifications but plenty of slate roofs didn't follow the specifications as contractors would try to save costs by reducing laps to save a course of slate and plenty of other dodges. It still happens, possibly more now as fewer people understand slate roofs.

The photos are of Inglewood station in Victoria, so the south roof slope is equivalent to a north slope in the UK.

 

[JimG]

Much of what has been posted here about this subject is in line with the way in which the slates were laid on my 1890s property - duly noted when I replaced the slates, with new ones, circa 1975. The most interesting bit, not yet appearing here, was the method by which the flashing was fixed in the adjacent brick wall using skew-cut timber wedges.

Maybe a reminder of my battle with slates a couple of years ago.

http://www.westernthunder.co.uk/index.php?threads/slating.1979/

In this case I was laying slates to irregular patterns but there are some good URLs in the thread on slating. I think the irregular method was common on cheaper housing and industrial buildings where cost was a factor and the slaters basically took what the slate quarry sent them and they had to sort the various sizes out on site before laying.

Jim.

 

[BrushType4]

Jim, I'd forgotten about that thread. Brilliant work. Have you got any recent pictures of you model?

 

[JimG]

Jim, I'd forgotten about that thread. Brilliant work. Have you got any recent pictures of you model?

I haven't. The shed was planted on the layout about eighteen months ago and, apart from a bit of repair work to deal with a small bit of damage in transit to an exhibition, hasn't moved from its base.

I don't know how irregular slating could be done on a laser machine, apart from cutting all the individual slates and doing it the hard way by hand. At least it would have made my job easier if I hadn't had to cut and bevel every damned slate individually. I think if I do another slating job, that it will be on a higher class type of building where high quality, matched size slates were used, then a laser cutter would be ideal, doing strips of slates like you have been producing.

Jim.

 

[TimC]

Jim, I'd forgotten about that thread. Brilliant work. Have you got any recent pictures of you model?

Here are a couple of shots of Jim's Good Shed on Somerset Lane (though we call this end Caledonian Road for some reason...)

 

[BrushType4]

Slates have been redrawn to accommodate both 1.5 x end width or normal. And I've added the ridge tiles too.



I've tweaked a couple of other bits, a step, some internal detail. Apart from that it's ready to sell. I've scaled some kits down to 1/48 for a particular market that is my Mum's interest. So will see how they are received at a trade show this weekend.

 

[BrushType4]

Scatter gun today so I've adapted some plans I was given to create this GER station wall in 7mm.

Will probably end up on the West Mersey S7 layout once I've finished it.



I need to get a better camera.