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Computer Assisted Terrain Making?
#21
Andy, I must say that I truly envy the toys that you get to play with! I haven’t ever gotten to use a milling machine that was anything more than a fancy drill press.



[Image: Bridge%20Master%20mold%20end%20piece%20L...zzhqvr.jpg]

The first set of mold masters I made for this project I placed the part line strait down the center. It worked, but I had a few problem with getting the rim of the post caps to cast properly. I first tried to fix this problem by adding air vents to the top of the cap stone. That worked (sort of) but that gave me a lot of cleanup work with the finished casting. If you are interested in this then pleas take a look at my blog.http://18charlie.com/from-concept-to-reality-part-two/

[Image: Bridge%20Master%20mold%20end%20pieceMK3L...43n4rv.jpg]

[Image: Bridge%20Master%20mold%20end%20pieceMK3L...e4l3bv.jpg]

My next round I am going to try making some serious improvements in the routing of the part line. Doing this digitally enables me to do so many things easier and more precisely that the old way did. I should have done it this way from the beginning, but sometimes merging old and new skills isn’t as seamless as we would like.
#22
This is absolutely genius. I've used 3D printers for my first sculpt, but this cuts out one step. So cool. I might try this.
[+] 1 user Likes djdjthenon's post
#23
Thanks djdjthenon! The real advantage of doing it this way is the very precise control of the part line that it gives you. Do you print them yourself or do you have a service print them for you? Doing it this way substantially increases the size of the print so the cost also goes up proportionally. Unless you have your own printer or really need that precision for some reason then it is probably cheaper to do it the usual way. I am doing it this way for the fun of, but if I didn’t have my own printer then I wouldn’t even consider doing it like this.



[Image: GEDC1410_zpsdk8jmffd.jpg]


15mm Bridge prototype


This bridge was originally designed to be made in 28mm. Scaling it down to 15mm was very simple since it only required a little bit of adjustment to the basic design. Unfortunately I have been experiencing major problems with my 3D printer or it would be completely finished by now. Because of these problems I have decided to paint up a prototype just to see what it will look like (sort of) when finished. I still intend to eventually do it in the originally planned 28mm also.

The first problem is that my printer keeps having a clogged tip whenever I try to print something on a finer setting. Consequently the prototype is a little bumpy due to having to use a faster less detailed mode of printing.

The second problem is that I don’t yet have a heated printing bed. The corners of the bridge cool at a faster cate that the rest of it causing them to warp a little. It isn’t too noticeably visibly on each individual piece, however it plays havoc with the joints between pieces, and makes it a waste of time to try making a mold of them.

The third problem is that My printer doesn’t like printing really small areas. The top corners of both ramp sections have a hole in them where the printer determined that the surface area was too small to work with and consequently decided to clog the print nozzle.

Despite all of these problems I am very excited about this bridge. I plan to make it in a 3inch wide version (the one shown) and also a 6inch wide one. Because of the modular design of it you can make the bridge as long or as short as you need it to be simply by adding or removing the extension sections.

[Image: GEDC1250_zpsuq72ipqs.jpg]

[Image: GEDC1408_zpsmnzyjwux.jpg]

[Image: WP_20150306_005%202_zpsaswraxsq.jpg]

[Image: GEDC1403_zpsqhd5itnr.jpg]
[+] 1 user Likes Vet Sgt's post


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