[TowerTalk] Lexan of Plexiglass As Yagi Insulator?

[Jim Brown]

As I proceed with building a 15M yagi, K6RM pointed me to G0KSC's OWA 
design, and K5RC noted that he likes the design. As I study G0KSC's 
website, I like it too, and note that he suggests the use of 15mm 
plexiglass as an insulator for 50 MHz and 70 MHz Yagis. One slick 
thing about the OWA design is that element lengths and spacings are 
tweaked so that it matches directly to 50 ohms. YW says 1.25 VSWR 
worst case over the band, 8.1 dBi gain over the band, >21dB F/R. 

My elements (from a neighboring Silent Key's boneyard) will probably 
all be 0.875-inch at the center (tapering to 5/8-inch), except that 
the driven element might be 1-inch tapering to 3/4-inch. What do you 
think? Would Plexiglass or Lexan be sufficiently robust? I'm thinking 
of drilling holes in it just like one would do with an Aluminum plate 
for two pairs of u-bolts, one to hold the element and the other to 
hold the plate to the 2-inch boom. Any other suggestions?  

73,

Jim K9YC