I am primarily a tennis player, but I played badminton regularly with the Garden City Badminton Club in Garden City NY for several years.
The machine I use for stringing is particularly well suited to badminton stringing. In addition to a rock solid mounting system and Japanese engineered tensioning head I have outfitted the machine with Babolat diamond dusted clamps for unequaled precision.
The good news with badminton racquets is that they don't weigh much, which means it isn't cost prohibitive to ship an entire clubs worth of them out for re-stringing. If you'd like to ship badminton racquets to me, here's an address:
Precision Racquet Stringing
202 Atlantic Ave Suite B
New Hyde Park NY 11040
You can check out the string selection and pricing here. If you are not a NY resident you are not subject to NYS sales tax. Divide by 1.08625 to calculate your cost.
Please include a note indicating your choice of string and tension and provide either an email address or phone number where I can reach you. I will invoice you via Paypal when the racquets are strung.
A word about badminton grommets. Especially on older racquets it is often necessary to replace large numbers of grommets to ensure the integrity of the stringing. I do not charge for the first ten grommets I replace in any one frame. Beyond that though I charge 20 cents/ea. I will contact you prior to stringing if there are going to be additional charges.