Tin corner pieces for masonite?

I've been doing the prep work for a repaint job on my house. It has masonite siding, and I've been replacing some of the masonite with hardiplank. Where the siding meets at a corner of the house, there are these little tin trim pieces that cover/seal/close the right angle corner. They are just a little taller than the individual siding slats, they have a lip on the bottom side that fits over the bottom of each of the two pieces being joined, and they have a little extra length at the top to slide up under the joint above so they can be lap nailed. What are these things called? Does anyone sell them anymore? A local supply store here said they haven't made them in 20 or so years and that I wouldn't be able to find them any more. What is a reasonable replacement? Hardiplank seems to use 2 1x4's to create a solid corner piece from bottom to top, but I'm only missing a couple of these little pieces so I don't want mismatching corners on my house and don't really want to create a 9 ft solution to a 13" problem.
I've also tried making my own out of some drip edge, but it didn't look very beautiful. Any help is greatly appreciated. A recap of my questions:
What are they called? Can you still get them anywhere? If they're not still available, what is a reasonable substitute/replacement?
Take out the REMOVEME to copy me on the response to the post, if you like. THANKS! snipped-for-privacy@austin.rr.com
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

try an aluminum siding company or distributor. last time I needed them I found them at a local distributors warehouse. OR bend your own on a brake.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

www.rollex.com/pdf/stimages/steel_p14.pdf
Perhaps you can track them down this way.
--
Colbyt
Remove " stopspam." from the email address to reply via email
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.