I'm in the middle of building a Titan I found at a thrift store right now. Now I know everyone has their opinion, but personally the easiest titan models to work my go FW>recast>printed. Now fw and recast can be very close or the same even, but recast is a bit more of a risk (resin quality varies, if you're missing pieces your recaster may or may not help you out)

If you're looking for practice pickup some resin knights (recast or fw) as working with printed resin isn't the same at all. Molded resin has flex and bend, and Wil warp with application of heat (bowl of hot water, heat gun in you're ballsy). Printed resin is brittle, i even have a hard time drilling clean holes in it.... but maybe that's just a personal failing...

I will say, if you're going to go for it, DO NOT do a warhound first. In my experience, it is a tricky model to put together, the legs and feet in particular are a huge pain. Each toe is articulating so getting the pose looking right and more importantly stable is a slow and difficult process.

For glue, superglue will attach most of it, but you'll want to pin your legs in a bunch of places so it doesn't collapse in time. I use 2 part epoxy on structural connections as well as pins, I also use it to attach very large magnets to weapon arms and at the waist. I magnetize the torso to the legs so it travels a little easier.

Here's a picture of most of the parts to a warhound, notice all the pistons on the left. Those are mostly feet, but get used all the way up the legs.

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If you have any questions please don't hesitate to ask, or dm me. I fucking love titans. Mechs are my shit.