Home-Made IEMs
Sep 19, 2021 at 7:04 AM Post #13,366 of 13,621

Aldo40

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Do not create holes, if you use chitubox, this software may automatically create a hole for the removal of resin. In your slicer software you need to create support, you can put the shell to 45 degrees. Personally I use Lycheeslicer, it is a bit less simple than chitubox but it is very good. However you can stay on chitubox but prefer prints with support for the shells you will have less problem. You can even put a single large support on a slice for it to work , it must have a large enough base to support suction when lifting the tray, I will try to make you screenshots.

exemple:

 
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Sep 19, 2021 at 11:35 AM Post #13,368 of 13,621

Wgibson

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How do I work with litz wire? It seems like its too thin to strip. I've seen some methods online that uses a pool of molten solder to strip and tin it. Can I do something with only a soldering iron?

Just flux the end and start soldering, the insulation will burn off
 
Sep 19, 2021 at 6:10 PM Post #13,369 of 13,621

discus123

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Do not create holes, if you use chitubox, this software may automatically create a hole for the removal of resin. In your slicer software you need to create support, you can put the shell to 45 degrees. Personally I use Lycheeslicer, it is a bit less simple than chitubox but it is very good. However you can stay on chitubox but prefer prints with support for the shells you will have less problem. You can even put a single large support on a slice for it to work , it must have a large enough base to support suction when lifting the tray, I will try to make you screenshots.

exemple:

thanks your advise. I will make change and print the shell again. Do I need to change the printer setup also. please take a look for me,

Layer Height = 0.03 mm
Exposure time = 8 seconds
bottom layer count = 5
bottom exposure time = 30 seconds
anti-aliasing = 5
Lift total height=4
Lift speed= 120
retract speed =120
stop time=3

thanks.
 
Sep 19, 2021 at 7:19 PM Post #13,370 of 13,621

mattmatt

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thanks your advise. I will make change and print the shell again. Do I need to change the printer setup also. please take a look for me,

Layer Height = 0.03 mm
Exposure time = 8 seconds
bottom layer count = 5
bottom exposure time = 30 seconds
anti-aliasing = 5
Lift total height=4
Lift speed= 120
retract speed =120
stop time=3

thanks.
This would depend on your printer, sadly. You have to know which works for you the best. Printing without failures + printing at the shortest time.

Sometimes, there are even batches of resin that you have to increase exposure time by a second or two.
 
Sep 19, 2021 at 7:54 PM Post #13,371 of 13,621

kkugel

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thanks your advise. I will make change and print the shell again. Do I need to change the printer setup also. please take a look for me,

Layer Height = 0.03 mm
Exposure time = 8 seconds
bottom layer count = 5
bottom exposure time = 30 seconds
anti-aliasing = 5
Lift total height=4
Lift speed= 120
retract speed =120
stop time=3

thanks.
Hey man, layer height of 0.05 is sufficient for great detail. You'll save some time :wink:

thanks your advise. I will make change and print the shell again. Do I need to change the printer setup also. please take a look for me,

Layer Height = 0.03 mm
Exposure time = 8 seconds
bottom layer count = 5
bottom exposure time = 30 seconds
anti-aliasing = 5
Lift total height=4
Lift speed= 120
retract speed =120
stop time=3

thanks.
Oh and double lift height to 8, as well as lift speed to 80. These are the things that actually improve print quality
 
Sep 20, 2021 at 7:00 AM Post #13,373 of 13,621

CBTlover223

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How do I determine good cutoff frequencies for my crossover network? My current understanding is that I tune it to match my target FR, but Will the sound change at where different drivers intersect? Also, when should I use a zobel network for the woofer?
 
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Sep 20, 2021 at 10:47 AM Post #13,374 of 13,621

kkugel

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It also depends on the resin used, look at the resin maker and see what they advise as setting in relation to your printer?
Slower lift and further lift generally improve results for all resins in my experience
 
Sep 20, 2021 at 12:44 PM Post #13,375 of 13,621

Aldo40

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Slower lift and further lift generally improve results for all resins in my experience
Yes it depends on the resins, there are resins where the standard settings are enough and other or sometimes it is necessary to slow down the lifting for a good detachment of the layer on the FEP, as I said, each one makes these experiments and in the end each will have his own settings. people can be advised more precisely if they use exactly the same material. I think I have a hundred test shells printed to make my adjustments, the most difficult resins are the clear, I didn’t use more than one
 
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Sep 20, 2021 at 8:22 PM Post #13,376 of 13,621

Wgibson

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First hybrid, nothing special but I like the curve, almost too bright with that 5.5k spike but this is with no dampers or filter (I might put a screen filter on it later.) I was trying to get the most highs out of the 29689, think I did ok.

8mm dual DD and a 29689 in parallel. Out of polarity(phase.) They were fine before the crossover, but I had some cancelation after the crossover so it was better reversed.

High pass 29689 4.7uf and 3 ohm resistor to better match the DD. Crossover just built on the terminal.

Pics and curve:
8mm dual DD BS29689n.jpg20210919_190955.jpg20210919_184434.jpg20210919_151830.jpg
 
Sep 21, 2021 at 2:26 AM Post #13,377 of 13,621

discus123

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Thanks all you guy helping. Thanks a million, you all are great and expert !!!

I used the clear high transparency UV Resin. They just told me to use 0.03mm for layer height and exposure time of 8 seconds, other than that they haven't mentioned. I changed the shell to 45 degree hanging on the build-plate and did not make a hole this trial, lift height to 8 and lift speed to 80 but the layer height remain 0.03mm. Woo, it needs 8hrs 45mins to complete the printing. I start it before I go to office and leave it there and to see what's the results when I back home.

Nova clear high transparency UV resin.png
 
Sep 21, 2021 at 2:35 AM Post #13,378 of 13,621

Aldo40

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Thanks all you guy helping. Thanks a million, you all are great and expert !!!

I used the clear high transparency UV Resin. They just told me to use 0.03mm for layer height and exposure time of 8 seconds, other than that they haven't mentioned. I changed the shell to 45 degree hanging on the build-plate and did not make a hole this trial, lift height to 8 and lift speed to 80 but the layer height remain 0.03mm. Woo, it needs 8hrs 45mins to complete the printing. I start it before I go to office and leave it there and to see what's the results when I back home.

Nova clear high transparency UV resin.png
8h seems excessive, you have to review the settings in my opinion because I have to put a little more than 3H with any resin.
 
Sep 21, 2021 at 2:44 AM Post #13,379 of 13,621

mattmatt

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Thanks all you guy helping. Thanks a million, you all are great and expert !!!

I used the clear high transparency UV Resin. They just told me to use 0.03mm for layer height and exposure time of 8 seconds, other than that they haven't mentioned. I changed the shell to 45 degree hanging on the build-plate and did not make a hole this trial, lift height to 8 and lift speed to 80 but the layer height remain 0.03mm. Woo, it needs 8hrs 45mins to complete the printing. I start it before I go to office and leave it there and to see what's the results when I back home.

Nova clear high transparency UV resin.png
you have to check your settings bro. I think 8 hrs is a bit much. 5 hrs max for me. That would depend on how I orient my shells and how high they are.
 
Sep 21, 2021 at 3:40 AM Post #13,380 of 13,621

discus123

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I set the supports 10mm hanging the shell on the build-plate. Is that too high ?

I used the software that come with the 3D printer, Nova 3D maker. I did compare it with Chitubox v1.9. Chitubox is faster by 50%. but one thing is Chitubox has a lot of option it needs to config. Do I need to config it or just use the default setting is ok ?
 

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