Elsewhere dvgrn wrote:I wish someone (besides me) would pick up a self-constructing circuit project again, and develop some of these techniques further. Anyone want to finish a Demonoid? It will probably be cheaper and easier again by now.

I agree and it would be especially cool to see syringes involved. Only last week I decided to make a Demonoid blueprint along those lines. Just now I added some possible ways to construct the non-Spartan still lifes. Here is the result:

`x = 270, y = 325, rule = LifeHistory`

159.A$160.2A$159.2A2$2.A$A.A$.2A$171.A59.4B6.4B$169.A.A58.4B6.4B$170.

2A57.4B6.4B$228.4B6.4B$227.4B6.4B$226.4B6.4B$225.4B6.4B$224.4B6.4B$

223.4B6.4B$179.A42.4B6.4B$177.A.A41.4B6.4B$178.2A40.4B6.4B$219.4B6.4B

$218.4B6.4B$217.4B6.4B$216.4B6.4B$215.4B6.4B$214.4B6.4B$213.4B6.4B19.

2D$212.4B6.4B20.D$211.4B6.4B19.D.D$210.4B6.4B20.2D13.2D$209.4B6.4B36.

2D$208.4B6.4B$207.4B6.4B$206.4B6.4B3.2D40.2D$205.4B6.4B4.2D40.2D$204.

4B6.4B43.2D$203.4B6.4B44.2D$202.4B6.4B$55.A145.BD2B6.4B$56.2A142.3DB

6.4B$55.2A142.D3B6.4B53.2D$198.B2DB6.4B54.2D$197.4B6.4B$196.4B6.4B$

195.4B6.4B$194.4B6.4B$193.4B6.4B$192.4B6.4B29.2D$191.4B6.4B30.D$190.

4B6.4B32.3D$189.4B6.4B35.D$188.4B6.4B$187.4B6.4B$186.4B6.4B$185.4B6.

4B$42.A141.4B6.4B$40.A.A140.4B6.4B49.2D$41.2A139.4B6.4B49.D.D$181.4B

6.4B50.D$180.4B6.4B50.2D$179.4B6.4B$178.4B6.4B22.2D$177.4B6.4B23.D.D$

176.4B6.4B25.D$175.4B6.4B$174.4B6.4B$69.A103.4B6.4B67.2D$67.A.A102.4B

6.4B22.2D44.2D7.2D$68.2A101.4B6.4B24.D53.D$170.4B6.4B22.3D52.D.D$169.

4B6.4B23.D54.2D$168.4B6.4B62.2D$167.4B6.4B63.2D$166.4B6.4B54.2D$165.

4B6.4B56.D$164.4B6.4B57.D.D$163.4B6.4B59.2D$162.4B6.4B$161.4B6.4B$

160.4B6.4B79.2A$159.4B6.4B79.A2.A$158.4B6.4B81.2A$92.A64.4B6.4B$90.A.

A63.4B6.4B$91.2A62.4B6.4B$154.4B6.4B72.2D$153.4B6.4B9.2D61.D.D$152.4B

6.4B10.D62.D$151.4B6.4B9.D.D61.2D$150.4B6.4B10.2D13.2D$149.4B6.4B26.

2D66.A10.2A$148.4B6.4B94.A.A9.2A$147.4B6.4B95.A.A$146.4B3.2D.4B35.2D

60.A$145.4B4.2D4B36.2D58.2D$144.4B6.4B33.2D62.2D$143.4B6.4B34.2D54.2D

$142.4B6.4B92.D$117.A23.4B6.4B90.3D13.3A$115.A.A22.4B6.4B91.D$116.2A

21.4B6.4B43.2D$138.4B6.4B44.2D45.A2.D$137.4B6.4B91.A.AD.D$136.4B6.4B

93.2AD.D$135.4B6.4B94.3D.2D$134.4B6.4B94.D4.3A$133.4B6.4B96.3D.2D$

132.4B6.4B99.D.2D$131.4B6.4B18.2D$130.4B6.4B19.2D90.2D$129.4B6.4B112.

2D7.2D$128.4B6.4B122.D$127.4B6.4B121.D.D$126.4B6.4B122.2D$125.4B6.4B$

124.4B6.4B$123.4B6.4B39.2D$122.4B6.4B39.D.D64.2D$121.4B6.4B40.D66.2D$

120.4B6.4B40.2D$119.4B6.4B$118.4B6.4B$117.4B6.4B$116.4B6.4B128.D$115.

4B6.4B128.D.D$114.4B6.4B129.D.D$113.4B6.4B57.2D72.D$112.4B6.4B58.2D7.

2D64.3D$111.4B6.4B68.D67.D$110.4B6.4B67.D.D$109.4B6.4B68.2D$108.4B6.

4B52.2D$107.4B6.4B53.2D$106.4B6.4B44.2D$105.4B6.4B46.D$104.4B6.4B47.D

.D$103.4B6.4B49.2D$102.4B6.4B$101.4B6.4B$100.4B6.4B$99.4B6.4B$98.4B6.

4B$97.4B6.4B$96.4B6.4B$95.4B6.4B$94.4B6.4B62.2D$93.4B6.4B62.D.D$92.4B

6.4B63.D$91.4B6.4B63.2D$90.4B7.4B$89.4B7.5B$88.4B5.9B$87.4B6.9B$86.4B

7.9B$85.4B8.10B78.2D$84.4B8.12B77.2D$83.4B8.13B8.2A59.2D$82.4B10.11B

9.A61.D$81.4B12.12B4.BA.A58.3D$80.4B13.15B.B2A13.2A44.D$79.4B14.17B

14.B2AB$78.4B15.17B15.2B45.D$77.4B13.B.17B17.2B3.B39.D.D$76.4B13.2A

19B15.4B.B2A38.D.D$75.4B14.2AB.19B11.8B2A36.3D.2D$74.4B16.B4.20B2.2B

2.6B2AB.B36.D$66.4B3.4B22.32B2A40.3D.2D$67.4B.4B23.9B.24B42.D.2D$68.

4BC2B25.7B2.28B$69.B3CB26.7B2.28B48.2D$69.C4B26.6B4.26B2A47.2D7.2D$

68.B2C4B25.7B10.4B.14B2A56.D$67.4B.4B24.6B12.4B2.11B.B55.D.D$66.4B3.

4B22.7B13.4B2.10B57.2D$65.4B5.4B22.5B15.14B$64.4B7.4B20.6B16.14B$63.

4B9.4B18.9B14.13B$62.4B11.4B16.7B.2A14.13B38.2D$61.4B13.4B14.4B5.A15.

8B.2B40.2D$60.4B15.4B12.4B7.3A12.8B$59.4B17.4B10.4B10.A12.9B$58.4B19.

4B8.4B24.10B$57.4B21.4B6.4B24.7B.4B$56.4B23.4B4.4B24.8B2.4B55.D$55.4B

25.4B2.4B24.8B4.4B53.D.D$54.4B27.8B25.8B5.4B52.D.D$53.4B29.6B24.2AB2.

6B5.4B52.D$52.4B31.4B24.A.AB.7B6.4B52.3D9.A$51.4B31.6B23.A4.6B8.4B53.

D8.A.A$50.4B31.8B21.2A4.6B9.4B61.A.A$49.4B30.10B27.6B10.4B61.A$48.4B

30.2B2C7B26.8B10.4B$47.4B31.2BCBC6B27.8B10.4B54.2A7.2A$46.4B31.4BC6B

27.9B11.4B52.A2.A5.A2.A$45.4B31.7B32.9B12.4B52.2A7.2A$44.4B32.3B36.

10B12.4B$43.4B31.4B37.5B2A3B13.4B55.A$42.4B32.2A39.5B2A4B3.2A8.4B53.A

.A$41.4B34.A39.11B3.A10.4B52.A.A$40.4B32.3A40.12BA.A11.4B52.A$39.4B

33.A44.8B2.2A13.4B$38.4B72.2A5.7B19.4B$37.4B71.2B2AB2.7B22.4B$36.4B

64.2A6.4B2.9B22.4B$35.4B66.A5.6B.11B.2B18.4B$34.4B67.A.AB.22B19.4B$

33.4B69.2AB.23B19.4B$32.4B72.25B20.4B35.2A$31.4B73.28B18.4B33.A.A$31.

4B73.28B19.4B33.A$30.5B74.29B18.4B$27.9B74.28B19.4B$27.9B75.28B19.4B$

27.9B77.26B20.4B$27.10B75.27B21.4B$26.12B72.2AB.23B24.4B$25.13B8.2A

61.A.AB.20B28.4B$26.11B9.A62.A4.16B33.3B$27.12B4.BA.A61.2A3.18B33.2B$

27.15B.B2A13.2A51.20B33.B$27.17B14.B2AB51.20B$27.17B15.2B55.18B$24.B.

17B17.2B3.B51.16B$23.2A19B15.4B.B2A52.13B$23.2AB.19B11.8B2A52.3B.2B2A

5B$24.B4.20B2.2B2.6B2AB.B51.4B2.2B2A3B$29.32B2A54.2A3.8B$29.9B.24B55.

A4.8B$30.7B2.28B48.3A5.8B$30.7B2.28B48.A8.7B$30.6B4.26B2A56.7B$30.7B

10.4B.14B2A48.A7.6B$30.6B12.4B2.11B.B48.A.A6.6B$29.7B13.4B2.10B50.A.A

6.5B$30.6B14.14B49.3A.2A4.6B$31.5B15.14B47.A4.B6.6B$31.6B14.13B49.3AB

2AB3.7B$33.4B14.13B51.A.2AB.8B$32.B2A2B14.8B.2B57.10B$33.2A16.8B60.6B

2A3B$51.9B59.6B2A2B5.2A$51.10B58.10B5.A$50.7B.4B56.11B2.BA.A$49.8B2.

4B55.12B.B2A$48.8B4.4B53.15B$48.8B5.4B51.16B$46.2AB2.6B5.4B47.2B.16B$

45.A.AB.7B6.4B45.2A18B$45.A4.6B8.4B44.2AB.17B$44.2A4.6B9.4B44.B.4B.8B

2.4B$50.6B10.4B50.7B4.4B$49.8B10.4B50.6B5.4B$50.8B10.4B51.4B6.4B$49.

9B11.4B52.3BA5.2B2C$49.9B12.4B52.BA.A5.BCBC$49.10B12.4B52.A.A6.CB$49.

5B2A3B13.4B52.A$49.5B2A4B3.2A8.4B52.3A$49.11B3.A10.4B53.A$49.12BA.A

11.4B$51.8B2.2A13.4B$44.2A5.7B19.4B$42.2B2AB2.7B22.4B$34.2A6.4B2.9B

22.4B$35.A5.6B.11B.2B18.4B$35.A.AB.22B19.4B$36.2AB.23B19.4B$38.25B20.

4B$38.28B18.4B$38.28B19.4B$39.29B18.4B$40.28B19.4B$41.28B19.4B$43.26B

20.4B$42.27B21.4B$40.2AB.23B24.4B$39.A.AB.20B28.4B$39.A4.16B33.4B$38.

2A3.18B33.4B$42.20B33.4B$43.20B33.3B$46.18B33.2B$47.16B35.B$49.13B$

49.3B.2B2A5B$47.4B2.2B2A3B$47.2A3.8B$48.A4.8B$45.3A5.8B$45.A8.7B$54.

7B$46.A7.6B$45.A.A6.6B$45.A.A6.5B$43.3A.2A4.6B$42.A4.B6.6B$43.3AB2AB

3.7B$45.A.2AB.8B$49.10B$49.6B2A3B$49.6B2A2B5.2A$49.10B5.A$48.11B2.BA.

A$48.12B.B2A$47.15B$46.16B$43.2B.16B$42.2A18B$42.2AB.17B$43.B.4B.8B2.

4B$50.7B4.4B$51.6B5.4B$53.4B6.4B$55.3BA5.4B$56.BA.A5.4B$57.A.A6.4B$

58.A8.4B$59.3A6.4B$61.A7.4B$70.4B$71.4B$72.4B$73.4B$74.2B2C$75.BCBC$

76.CB!

I estimate that the construction is around 10-20% more expensive that the previous blueprint but the repeat time is more than 3 times faster (153 ticks vs ~500 ticks).

The rest of the construction/destruction is left as an exercise to the determined reader. I can't see me attempting this in 2015.