The arms are just the actual Ogre ones. Or do you mean arms in the sense of weapons?
I generally use one of the actual Ogre weapons on one hand. For my Penal Legion Ogryns, it's one of the scrap/pieced together gauntlets (I think they're called ironfists? I don't actually play Fantasy). On the Catachan Ogryns it's one of the larger swords, which all have kind of a machete look to them anyway (good in the jungle).
I built the ripper guns on the Penal Legion guys from scratch using some plastic tubing and bitz. I might do something a little more elaborate on the Catachan ones (maybe with more of a drum magazine), although a friend of mine just did a fantastic conversion using the heavy bolter from the IG heavy weapons team.
I'll throw up some pictures and specific instructions [URL="http://thegrimcheapness.blogspot.com/"]over on my geeky blog later[/URL] this week, if you like.
Exitus Acta Probat
http://thegrimcheapness.blogspot.com/
can't say I've ever thought of them as "fat" as their muscle build is so great that it doesn't matter, but I would try a diffrent game theirs always good other options out their
I was revering to the ogers giant pot belly and thunder thighs when I said they looked fat which I imagine fits with their fluff, I suppose they are more worlds strongest man in build rather than what I would consider to be healthy looking, although my army of choice is Eldar so if anything is not tall and athletic I personally would concider it looking 'out of shape' But I have decided to buy some to convert since they are plastic and still GW range so I can avoid any Bulls**t that may accure with the use of none GW minis
They don't have ripper guns, but the Scribor Prussian Ogres are pretty cool:
[url]http://sciborminiatures.com/en_,shop.php?art=697[/url]
[url]http://sciborminiatures.com/en_,shop.php?art=693[/url]
[url]http://sciborminiatures.com/en_,shop.php?art=695[/url]
[url]http://sciborminiatures.com/en_,shop.php?art=694[/url]
http://miteyheroes.blogspot.com/ - My 40k Blog: Adeptus Mechanicus, Imperial Guard Grots, Conversions, Battle Reports and more.
I just tossed a post up on my site, [URL="http://thegrimcheapness.blogspot.com/"]In The Grim Cheapness of the Future...[/URL], about how I turned Fantasy Ogres into Guard Ogryns.
This entry is all about coverting the body and stripping away the Fantasy-ness of them. Next week I'll put up something on building ripper guns for them.
Hope it helps.
Exitus Acta Probat
http://thegrimcheapness.blogspot.com/
Maxmini now offers a "Space Ogre" sculpted by Bob Olley.
[url]http://www.maxmini.eu/store/index.php?main_page=product_info&cPath=15&products _id=201[/url]
At 13 Euros, it's expensive, but it comes with four extra heads, and three arms, so if you buy one, you'll have spare parts for conversions.
[edit: just checked the German GW website, and official ogryns are 17 Euros each, so the Maxmini ogre is cheaper.]
Fantasy Ogres converted using Ork Shootas and shoulder pad bits, some Plasticard, and a little greenstuff.
Take the arms with clubs, cut the clubs off at the hand. It leaves a nice flat surface to glue the gun onto.
The belly-plates make decent helmets with very little rework required. Once you assemble the feet shave the pointy shoes down so its more like a normal boot.
Another option would be the Ogre Lead-belchers. While you only get 4, I suspect their hand positions would work well with an IG Autocannon.