The balsa stripper with the 39in. channel is a Sltec that was carried by Hobby-Lobby. I went down to my shop and dug out the paperwork for mine. My stripper is about 25 years old and it is still listed by Hobby-Lobby as "HLH 625" http://www.hobby-lobby.com/balsa_stripper_2482_prd1.htm
I have only used mine a few times, but they sure make a job easier.

Mike