MikeTrice

Inkscape never pretends to be CAD rather a graphics program. Having said that I have used it to produce both accurate 2D drawings and etching artwork. @chris p bacon also uses it for etching artwork. At the end of the day use whichever piece of software suits you that can be imported into Silhouette Studio.

In Inkscape the x,y location of an object does not appear when you first draw the object but rather when you select it, then the x,y coordinate appears in the toolbar.

Montana Gold?

https://www.montana-cans.com/en/spray-cans/montana-spray-paint/gold-400ml-artist-paint/

Harris states black ends were introduced after 1925 so technically teak ends would be valid depending on what time the preserved set is supposed to represent.

Especially when they get the "R" wrong ;-)

26 minutes ago, thegreenhowards said:

The compartments were so tight on the quad arts that the space for the numbers is very tight and I’m struggling to get the transfers to fit. I’ve just about squeezed them in but they look very cramped. I’ve been using Fox transfers which have worked well on the other coaches I’ve built but they’re too big for this one.

 

Andy

I suspect the problem is the sides rather than the transfers. It looks as if the vertical beading on the lower panels is not located correctly.

Fox do some correct size lettering: https://www.fox-transfers.co.uk/transfers/lner-teak-coach-branding-79095

They provide the branding "SLEEPING CAR", "BUFFET CAR" and "RESTAURANT CAR". Providing you choose a Sentinel name that is using the same letters they should provide a solution.

On 15/06/2021 at 09:11, thegreenhowards said:

Hello Dave,

One question if I may, why is the lining a sort of orange/ teak colour? I was expecting it to be primrose like on the pre production sample below. Is there a prototypical justification for the orange colour? It looks neatly done, so it would be a shame to have to redo it.

Regards

 

Andy

 

Hard to tell without seeing a larger image but it could be an optical illusion. The prototype was lined with primrose but had a thin red line alongside the primrose which may look orange at a distance.

And these: https://www.mobablog.info/blog.php?id=2643

There is a drawing here but the dimension are almost impossible to read: https://www.rhb.ch/fileadmin/user_upload/redaktion/Ueber_die_RhB/UNESCO Welterbe/Dokumente/Kandidaturdossier/Englisch/2a4_en.pdf

When cutting styrene by hand I have always cut inner openings by cutting around the edges then cutting two diagonals across the centre. It makes the centre easier to snap out.

Do the same with the Silhouette but you might have to hand finish the diagonals to ensure they cut through at the centre.

They are the same as far as I can see. Worth watching.

Agree. Unlike the earlier mouldings the longer Hornby Corridor Clerestories had no moulded panelling.

The cornice is a teak moulding that covers the joint between the canvas on the roof and the teak sides so the top would be teak coloured. The Cornice Plates, which go over the doors, are steel and are screwed to the Cornice. They were painted with teak coloured paint.

Cornice plates over the doors????????

Thanks Ian, might prove useful, however in this instance it was something I should (and did) fix at source.

I mentioned previously issues with anti aliasing on the Mono X and have finally had a chance to print my test sphere to compare results. The UV strength was reduced to 40% and exposure increased to 3.2 seconds. No improvement whatsoever:

I wanted to carry out some experiments regarding a van body. Before going too far into the modelling I wanted to verify how the planking would come out and the louvres in this GNR Fruit Van:

Ok, not the result I was expecting. It looks as if large chunks of the side have been ripped off of the print which I put down to the supports failing. It did however show me that I needed to reduce the plank gaps somewhat.

The second test print was better but still had the flaw:

So what was going on? I could not blame the weak sides or support falure here. The answer (I hope) is that the model was non-manifold.

The way the sample was put together was quite complex with lots of Blender Boolean operations. Boolean operations in Blender are always a bit fraught especially if you have multiples acting on the same object. Instead I applied some of the booleans and re-engineered the rest checking each component for being watertight along the way. The second test confirmed the planking depth for me but I was unhappy with the louvres which were also remodelled for test 3 which being watertight had no printing issues. Phew.

3 hours ago, cypherman said:

Hi Mike,

Does the £14.31 include postage. Last time I saw an upgrade kit for this engine on Shapeways the postage was as much the cost of the kit.

Postage is separate unfortunately.

I do a detailing kit if you want to go that far: https://www.shapeways.com/product/AS9BF4KHM/lima-j50-upgade-kit?optionId=137418314&li=shops

Does this help?

Black with shades of rust.

23 hours ago, Quarryscapes said:

Although quick question - the corner facing the build plate always gets bent up a little, can this be mitigated at all? I was thinking longer supports might helps as they would give before the more substantial wagon superstructure. 

 

That print looks pretty good. Hard to tell from the supplied image but you might try a couple more supports in the corner:

4 hours ago, Quarryscapes said:

They won't be circular because it's not a hemishpere, the curvature X-Z is different to Y-Z, as the edge needs to stay the same distance from the saddle tank. If it was to remain hemispherical, then the plan view would be eliptical. 

 

It's definitely not in the mesh, nor is it in the slices. I wonder if it's small imperfections in the FEP causing the last fragile layers to get mis-shaped?

When you print with supports and get distortions what angle are you printing at? If you are printing at an angle it might be worth printing a cube of known dimensions and then see if some form of calibration adjustment is necessary or try cleaning the lead screw and relubricate.

1 hour ago, Quarryscapes said:

Here's an odd one...Dome for my FR Prince project. When printed flat on the plate the last few layers have holes in. When printed on supports they do not, but the cylindrical accuracy is compromised and it is no longer a tight fit in the tank. When it frst happened I blamed a bit of dust on the screen, but as these have all been printed in different places on the platform, across 4 weeks, I'm pretty sure that isn't it! 

 

 

Top row were printed at the same time, left flat on the plate, right on supports. 50 micron layers. 

Bottom Row wer printed this morning after some more tweaks to the CAD, both flat on bed, left at 50micron, right at 35 micron.

 

As you can see, all but the supported one have a little hole somewhere near the apex. Not a big deal, It can be filled easily enough, but it is curious. 

 

 

I would expect the layer lines to be circular which they are not which suggests none are cylindrical. No idea regarding the hole.

5 minutes ago, drduncan said:

The progress is that photon workshop keeps crashing! I intend doing and uninstall re-install. Also I couldn’t find the file validator so I’d appreciate it  if anyone could provide the file path to help me locate it in the app.

 

Regards
 

Duncan

A lot of people have problems with photon workshop and don't think a lot of it. Personally I use Chitubox v1.8.1. Chitubox includes some validation capability but UV Tools is worth getting being free.

12 hours ago, Ian Kirk said:

I believe that the specification for LNER coaches was 3 inch square timber planed half round on top. This would then be screwed to the roof and allowed to adopt a curve as has been suggested over a 60 ft length I think that this would happen easily. (try lifting say an 8ft length of 1/4 dowel by the middle. It will curve naturally.)  In my O gauge kits I supply specially long lengths of Slaters rod. This once cemented in place, if the cementing and painting can be made to fill the slight undercut gives I think a good representation of a square section with the top planed half round.  

 

best wishes,

 

Ian

I think your dimensions are a bit out. LNER cross section below:

You may find that just reslicing it solves the issue but the other aspects are worth checking as they don't take long compared to a failed print.

Good luck and we hope to hear of any progress.