Thread for the tuning groove

Hi Chris,

Is this the one?

http://www.pinewoodderbyonline.com/post/khouse-groove-cutter-cheap-easy-6399815

or this one?

http://www.pinewoodderbyonline.com/post/kgroovekhouse-groove-kutter-jig-to-all-builders-6185766

Best regards,
 
FYI the saw at the end of that thread if you get it at hobby lobby don't forget to use the 40% off 1 item coupon. I have bought so many pinewood stuff there 1 item at a time to get the discount.

https://m.hobbylobby.com/coupon