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Attaching the Dome
#1
Well after lots of thinking. And I mean a lot of thinking! I've eventually got round to trying to attach the dome. So here goes with some pictures to help anyone else doing this. I've not completed it but I'll keep updating the post until I am :o) 


Step 1:
The bare bones shell with nothing on top :o)
[Image: attachment.php?aid=307]

Step2: Put on the first ring. This has been glued together but not bolted or glued to anything else at this stage. This thing has loads and loads of holes!! From what I can tell however most of these are redundant unless they magically fit your lazy susan (Im going to refer to this as LS from now)! You will notice some of the line up with the removable sides but I'm not really sure why this is (I might come back to this once I find out!). 
[Image: attachment.php?aid=308]

Step 3: This bit isn't in the instructions but instead of using bolts as a spacer I printed out a ring the exact size of the outer ring of the LS. I was thinking this would give a better platform for the LS to sit on. You don't need to do this and is probably overkill. 
[Image: attachment.php?aid=309]

Step 4: I drilled holes through the body and the spacer that aligned with the holes on the LS (I also had to drill these out on the LS). I'm not sure yet where to drill through at the front right and left (to be continued)
[Image: attachment.php?aid=310]

You can see here where they are aligned at the rear left and right of the body (The screws are int he wring way at this stage). 
[Image: attachment.php?aid=311]

Step 5: Turned round the bolt...
[Image: attachment.php?aid=312]

Step 6: Put on the LS with the gear attached
[Image: attachment.php?aid=313]

This should sit lower than the gear as shown below. 
[Image: attachment.php?aid=314]

Step 7: The gear attached below should be quite straight forward as as you can see here I have used 60mm bolts to go through the LS and the gear. These holes were already drilled in my LS.
[Image: attachment.php?aid=315]

These luckily aligned with the next ring perfectly as shown below. I did notice at this stage that the nuts I used were too thick and caused the next ring to sit quite high of the main body. 
[Image: attachment.php?aid=316]

I then replaced the larger nuts with the ones shown in the pic...

[Image: attachment.php?aid=317]

This shows the LS bolted at the 2 points (back left and right) to the frame and the 6 bolts sticking up from the LS for the Dome to sit on (I hope!). 
[Image: attachment.php?aid=318]

So time for the next ring.... The ring isn't glued together at this point but all the holes align with the ones in the model. Result! I have noticed it's quite loud when rotating. I suspect this is the crap LS I purchased on ebay when I was trying to save some money (you get what you pay for). I'll decide once the motor is up and running but I might print the spacer ring in another material (ninjaflex?) to help dampen the noise but I suspect this wont help much.
 
[Image: attachment.php?aid=319]

Now on to the next ring and this is where I have an issue. The bolts that come out through the LS are slightyl too wide and don't allow for the ring to attach together. The bots themselves are not perfectly vertical att his stage but I stil think I'm going to have to cut into the ring. 
[Image: attachment.php?aid=320]

Boo Sad - Thinking cap back on! 

[Image: attachment.php?aid=321]


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1
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#2
Wow, quite useful, thanks!!!
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#3
Excellent, really helpful.  Also very nice print quality. Like you spacer print.  

The problem I am having is that the Dome lower ring is too tight on the LS and is jamming.  I glued it together too tightly originally plus the LS I have is sold as an 18"/450mm which actually means 457mm, which is about the same as the dome lower ring inner diameter.  I am scraping it out to try to get it all to fit, almost there.   

I think in Larrys pictures he had to notch out the dome lower ring to get those bolts to line up.   

kyle
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#4
(04-05-2018, 10:23 PM)kylecampbell Wrote: I think in Larrys pictures he had to notch out the dome lower ring to get those bolts to line up.   

kyle

Yep. You will need to cut a notch in the ring:

[Image: attachment.php?aid=105]
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#5
I had this problem as well. Solved it now and have the pictures so will upload asap. Larry, did you think of shortening the bolts so they would just sit under the ring? I'm not sure you need them to be so long unless you are using them as a mechanism to hold on the dome without using a nut?
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#6
(04-07-2018, 06:50 PM)thebeetleuk Wrote: I had this problem as well. Solved it now and have the pictures so will upload asap. Larry, did you think of shortening the bolts so they would just sit under the ring? I'm not sure you need them to be so long unless you are using them as a mechanism to hold on the dome without using a nut?

Screws are meant to be long - they also hold on dome, no need for a nut.

They can probably be shorter than what I have, but this is what you want:

[Image: attachment.php?aid=377]

Having the longer bolts make it a bit easier putting the dome on and allows you to skip the nuts (which would be tuff to put on anyways).


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#7
I agree on the long bolts. I'll need to experiment tomorrow and I'll post my pics if I get some time at the end of the day

When I was putting together the dome originally the long bolts hit the ring as shown in the pic below. I have drilled these out now and my ring must be a bit smaller than yours as I don't think mine are cut as deep into the rings as shown in your pic. Either way it doesn't really matter as long as it all lines up! Smile

[Image: attachment.php?aid=378]


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#8
I now have the dome attached. Below shows the ring attached with 35mm bolts coming up through the lazy susan to hold the dome on. See assembly of the dome here. 

[Image: attachment.php?aid=380]

I marked the lazy susan (or the position on the gear below) and the dome so I can put them together in the same orientation each time. I'll mark these with something more permanent in the future. 
[Image: attachment.php?aid=381]

I then drilled out the holes in the dome from the bottom so they cut into the top ring (similar to what Larry had). Then the dome just sits on the top. Simple Smile 

[Image: attachment.php?aid=382]

This gives me a final 3mm gap from the body to the ring (probably less when I get it all screwed together properly. The printed spacer ring also stops you seeing through to the inside of the dome. 
[Image: attachment.php?aid=383]


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