It does indeed. just need to acquire some and a set of appropriate wheels.. probably from the Derbyshire area of Rowsley (formerly Matlock Bath) <wink>
I can see what you mean, but that would mean having to remove the seats from within. (Although they could be sat on the floor?) anyway, as it’s happened, it’s now quite strong on the V2 and actually remained flat! all I need now is to redo the body and get a nice crisp edge to the bottom.
Then you need code 7125 which comes with four brass axle bushes... assuming of course the wheel diameter is 3' 7" or if NSR used the Midland Maunsell type then that code is 7124.
Try adding a horizontal plate (say 3 to 5mm wide and a 1 to 2 mm thick) along the bottom edge of the sides, this will give a surface to add substantial supports to, allowing fine supports for the side which can be removed with out damage. Also a good gluing surface to attach the floor to. At the moment it looks like the bottom edge of the sides are not substantial enough to support the sides being built on them. Paul
I’m just checking that now.. just had to redraw another part as looks like some of them didn’t slice properly as were hollow inside. What’s odd is that I can look at the coach and that’s hollow all the way up, yet the top printed really well, so not totally convinced that is an issue when drawn in Sketchup. It may be that I’ve added a 123d block to it and then resaved it as an STL again, but again, I don’t see why that should cause an issue either? I’ll send you the sliced file over to have a look at (I can send the whole coach if you want and you can have an NSR interloper up north!)
Not sure where I read it but, if its hollow, is there not an error where the model isn't fully closed. Maybe in Blender you could extrude the inner surface to the other surface. Send away - afterall during the shooting season there was coaches 1st & 3rd plus Horse boxes came up in thier droves from all over the place. Paul
Well I’ve done a second print of the body which came out much better, but still has fails around the doors. Now sure why as it’s the same thickness all round the bottom. It’s not as noticeable and I may just get away with it… (and having now written this, I think the penny has dropped as to why and it’s nothing to do with a lack of support. - there is a very small instep under the door and I suspect the gap between the door and the bottom of the coach is very thin - too thin to print, so may need to look at an alternate inside infill.) What I have found odd, and maybe Mossy or Paul or the other printers in here can see or say what is happening? This is the support material. Nicely and cleanly strips away in warm water leaving next to no marks..but what on earth has gone on? Why has it infilled between the supports and even the depression between the seats which should be open and no support material whatsoever? Something very odd is going on.. Andy
Andy, can you print the body without the seats or with just the partition? I bet in comes out perfectly. that all looks like wrinkly bum syndrome to me, the alternate solution is to print the body angled, again that should fix the problem. Paul, any comments?
Hi Andy mmmm Do you have an exposure % setting on the printer, if so what is it ? Looks like you are under exposed and the base of the seats is not sticking to the supports rather it's sticking to the FEP, then breaking free What height are your supports, I normally print at 8mm using 5mm as a minimum for small parts only. On the heavy supports it looks like the cone is too narrow. Below I have used auto supports with the same settings, only difference is the Z lift height Left hand model Z=8mm, Middle Z=5mm, Right Z=3mm 8mm detail 5mm 3mm Note on the 3mm the base supports couldn'd even generate the base support cone or the parallel center section giving a narrow support cone. Hope that helps Paul PS got the files, I will take a look over the weekend.
Oop Just noticed the 5mm detail pic is the wrong one Note hear the base cone was also unable to form - which explains some of my fails at 5 mm lift. 8mm will be my standard from now on.
7mm looks good Base cone is fully formed Coloum has also formed, and the final cone starts at full diameter At a 0.05 layer height thats 20 layers saved. Paul
I’ll take a look and alter my settings for future.. I think my machine is set at 80% for the exposure - I’ve never had any issue with stuff not coming off the bed plate. The metal spatulas always scrapes it off fairly easily..
I print the axle boxes (covers seperate), so I can drill / ream out the holes for the bearings and fit the covers over the front. For the brakes I print the hangers etc with a 0.6mm hole then fit brass wire. Paul
Not without a big modification to slice them out. but it then presents the later issue of expansion and contraction and having to file or fill a gap when they don’t fit when printed separate. As it happens, there is a sizeable gap between the chassis and the body yet when printed, the body won’t go over the floor panel of the chassis.. need to file!
at the moment, I’ve simply gone with what Mark drew up, or duplicated his work. I can’t see why the chassis timber doesn’t run the full length and has steps around the wheels? And they are not even parallel.