I have a king-size bed frame made by Trehan. The slats sit on many 8" angle irons. I recently replaced my thick box spring (14") with a thin box spring (4"), and now need much shorter angle irons, like 2" (definitely not more than 4"). Shorter would be better visually, as the angle irons wouldn't extend below the bed's side rails.

How do I go about getting new/shorter angle irons? Is this something that has be be custom made? I wonder if I could bring the existing angle irons to a blacksmith and have them shortened? I have no idea whether it's cheaper to make new ones or modify existing ones. Trehan has closed its doors a few years ago, so I assume that route is not possible.

Thank you in advance for any suggestions!