Planning to make my custom case.

[PanterHZ]

Well, isn't the original PSU 65W? I've heard that it is not enough to power an expansion board (I have a 030/50, 64 mb), plus the CF card and the DVD rom.

90W should suffice then? I see people using 300W PSU for their case conversion...what the heck do they put in?

Just looking at how much watt a PSU can output is a bit pointless in my opinion. The thing is that most of the power on modern 300W PSU's is on the 12V rail, while on the Amiga, a decent 5V output is much more important.

As for your backplate, I would recommend that you use an aluminium plate instead of steel since it is much easier to work with.

Anyway, please post pictures of your progress

[PanterHZ]

The most important thing to look at when buying a PSU is the ripple at the 5v/12v at the load the Amiga pulls, ive used PSU's with high amps on 12v and 5v but at low load there was quite some ripple = unstable Amiga.

So allways google a PSU and check ripple values!

That might be true

The fact is that modern PSU's are really made for modern ATX boards which uses a lot of 12V power, most of them even have a second 12V rail dedicated to the CPU and GPU. I have a theory that maybe it could be an idea to connect something that draws a "lot" of power to the 12V ouputs, like some large resistors or something. This in order to maybe stabilize the PSU a bit.

[PanterHZ]

- The floppy ended up being on top of the raiser used to hook up the 2.5'' drives on the case; I've tried my best to place the floppy at the bottom, or under the CD drive, but there was no space whatsoever to do anything, so I ended up placing it on the raiser. Now I need to cut a hole trough the case and the front plate...if anyone has suggestions about how to do a clean job, I am all ears. I have a dremel and the cuts that I make are anything but straight; plus it makes the edge very irregular and I have no clue how to smooth it out.

I assume you are using the standard A1200 floppy drive. But I think it would be really easier to use a modified PC drive instead. like the ones Amigakit sells: http://amigakit.leamancomputing.com/catalog/product_info.php?cPath=28&products_id=106  This because it might be easier to make the hole.

Anyway, you need to find out exactly where to make the holes, and here you might have to be a bit experimental, but it doesn't matter if it don't look so good on the case since any mistakes you make will be covered by the front plate.
I would suggest that you do the rough cutting with your dremel, and then use a small flat file to even out the edges. Finish off by using a piece of fine sandpaper to smooth out the edges. It may involve a bit of work to get a good result, but focus mostly on the front plate.

Nice paint job btw

[PanterHZ]

Using a file on the floppy drive hole should work fine as long as you  don't use too much force, try to hold it in a sort of horizontal angle  in order to file over a wider area. But before you start making the  holes, you should probably find a way to mount the floppy drive properly  first.

Regarding the expansion card slot, I don't think you will  find any adapters for your needs, so you probably will have to make  your own. But if you do this, it might be an idea to try making it as  short as possible.

I don't know what your HDMI board looks like, but an idea could be to buy a short HDMI extension cable which have screws included on the connector, there simply must be something like this to be found on ebay.

[PanterHZ]

BTW, any suggestion for the front plate? I am scratching my head but can't find a nice solution, other than buying an A2000/3000/4000 floppy, and replace the 1200 drive, so I can just cut a square and use the drive front plate (painting it of course)

Well, one thing you could do, is to create a new small plate which you cut a new hole for the floppy in, and then glue it to the front plate. I would have made a template by using some cardboard first, where I would first have used a ruler to mark up where the hole should be. Then I would have used scissors for making the hole, and after making sure that a floppy disk can go through it without problems. I would have put the template on the new plate and marked where I should cut. Just an idea.