BrushType4
Western Thunderer
To go with the Platelayers hut, a ballast bin built from sleepers.
Brushs Laser Cutting and 3d Printing workbench
- Thread starter BrushType4
- Start date
Dog Star
Western Thunderer
Yes, please tell us.
BrushType4
Western Thunderer
I'm embarrassed to say that is was pretty easy. Here is a step by step;
- Mask off sleepers to leave rail and chairs exposed.
- Spray a good coat with Pheonix P961 Sleeper Grime (Matt)
- Remove masking tape. It will look a bit orange now but don't worry.
- For the ballast, with a paint brush paint PVA between the sleepers and everywhere ballast is wanted.
- Pour over ballast and wait to dry
- Tip off excess ballast and touch in any areas that need it. I do it this way as I don't like the look of PVA on ballast.
- Spray everything with light coats of Pheonix P981 Dirty Black (Matt)* to tone it all down.
- Mix in a few very light coats of Sleeper Grime*
- Dry brush black along the centre line of the sleepers to represent the oil and grime of the oil burners I run.
If it goes wrong, leave a day or two and if you feel it is still wrong go back to step One.
I hope that helps
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BrushType4
Western Thunderer
The LNER hut has left the paint shop...
Corner detail that was a feature of these types of building.
The concrete panels where rough cast so I have tried to give the panels a texture rather than a flat and smooth finish.
The roof is a sheet of wet & dry cut and glued with PVA. I think it represents an asphalt roof quite well.
I think any modern image layout should have a least one of these concrete modular buildings in various states of repair (neglect!)
Corner detail that was a feature of these types of building.
The concrete panels where rough cast so I have tried to give the panels a texture rather than a flat and smooth finish.
The roof is a sheet of wet & dry cut and glued with PVA. I think it represents an asphalt roof quite well.
I think any modern image layout should have a least one of these concrete modular buildings in various states of repair (neglect!)
BrushType4
Western Thunderer
As some may have see on Rob's silhouette thread, we've both got one of these cutters. I've got my out of the box and had a go with a Mark 1 coach window surround that is difficult to laser cut.
Not too bad, and while under very close examination it is not perfect. It does look quite good on a coach side that I cut out this morning.
The MDG is flat but was ideal to prototype. I'll cut some plastic up later and laminate to see if the correct tumble home can be created easily.
I've a dozen Lima coaches that will be widened and lengthened if this works.
Not too bad, and while under very close examination it is not perfect. It does look quite good on a coach side that I cut out this morning.
The MDG is flat but was ideal to prototype. I'll cut some plastic up later and laminate to see if the correct tumble home can be created easily.
I've a dozen Lima coaches that will be widened and lengthened if this works.
Dog Star
Western Thunderer
Just interested - why is the window frame difficult to do with your laser cutter? Or why is the Silhouette easier / better for the job?
BrushType4
Western Thunderer
The laser burns to make the cut so on very thin plastic, its tricky to get the a cut thats not melted too much away. Slow the machine down and use less power either doesn't cut or the melted plastic rejoins itself.
The silhouette using a blade doesn't have the same issues. Its not the panacea of cutting thin material but just works differently.
PS I've got some bits for you.
TheSnapper
Western Thunderer
Hi Phil
I'm a bit late, but Looks Good!
What paints did you use please?
Tim
Dog Star
Western Thunderer
I am expecting a brace of Grampii across the folding table during the forthcoming festivities and springing seems attractive. An earlier post in the topic showed how to fit the springs to the back of an axleguard from a Blue Spot van; for the Grampus you have written "I had to do something slightly different... " - can you remember the reason why you had to do something different?
thank you, Graham
BrushType4
Western Thunderer
I'll dig out the Grampuses and have a look.
BrushType4
Western Thunderer
A couple more buildings on the bench today.
A coal office
and a bit more work on the GCR weighbridge office.
A coal office
and a bit more work on the GCR weighbridge office.
Osgood
Western Thunderer
Phil,
Is it practical, with an economically available machine, to laser an entire surface in order to create a variable profile?
One application might be rough cut stone walling where there may be a height differential (in 7mm scale) of up to say 1.2mm?
I guess this would require either -
1) a Z axis position control as well as X and Y, or
2) variation of the laser power with constant directional feed, or
3) variation of feed speed.
I suppose the difficult bit will be programming the machine
Tony
Is it practical, with an economically available machine, to laser an entire surface in order to create a variable profile?
One application might be rough cut stone walling where there may be a height differential (in 7mm scale) of up to say 1.2mm?
I guess this would require either -
1) a Z axis position control as well as X and Y, or
2) variation of the laser power with constant directional feed, or
3) variation of feed speed.
I suppose the difficult bit will be programming the machine
Tony
BrushType4
Western Thunderer
Tony,
Its possible and I have been experimenting with stone walling and rough mortar courses.
The way I've been doing it is engraving a bitmap with various grey scales to represent the different heights.
So far limited success. As you say, its tricky doing the arty piece on the computer.
Its possible and I have been experimenting with stone walling and rough mortar courses.
The way I've been doing it is engraving a bitmap with various grey scales to represent the different heights.
So far limited success. As you say, its tricky doing the arty piece on the computer.
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Osgood
Western Thunderer
I guess so. Just that it seems so tantalisingly close to being quite feasible using a laser cutter.
I'm looking forward to seeing the combined results of Phil's laser work and your 3D printing on Love Lane's infrastructure before too long!
(note to self - take some decent coffee…..in fact take the coffee machine).
mickoo
Western Thunderer
Right tools for the job old bean, bit like eating soup with a fork, possible but impracticable
Now there's a pleasant thought
graham thorp
Member
Just a thought on the rough stone walling. I often wondered if the best way would be to laser scan a real section of wall and map it properly to capture precisely the varying heights, depth and texture and then transfer this to 3D printing.
This would be absolutely precise and take out all the guess work of trying to simulate the stonemasons wonderful art as there are some wonderful structures out there crying out to be modeled