Can't remember which company eventually produced the Spider Mech JOhn Bear Ross designed a few months ago. but some parts of that model might make a good base. Then get some necron spiney-bits for the body and I thik you should have something passable.

Yeah, track these down. They were about land raider sized spider thingies. I might do a bit of a search now and see what I can come up with.

Modelling putty sculpted to the right sort of smoothish bulged shape, then use plasticard cut to the right sort of angular shapes? Fiddly but could work. Spine bits from Necron Destroyer parts? (just buy the particular components you need online, no need to buy the whole kit).

GW canceled almost the entirety of their component-ordering service a year or two back.

GW canceled almost the entirety of their component-ordering service a year or two back.

I know, I was aware of this

However small companies stepped up to buy up GW kits, split them out and sell the bits online. It's mostly plastic but also some metal and you can even get some resin FW kits split out this way too.

I've linked to one of the companies myself in my signiture for yonks now since I stumbled across their existence (I've used both them and Bitzbox and Bitzbox actually have a wider range so might be the better option though worth checking both).

If something is not in stock you can signup for a reminder email when they come in. All in works pretty handily for converters as you now get multiples of a single component on a plastic sprue rather than having to buy the whole sprue like you had to from GW.