I mentioned yesterday that I would try to post a photo of how I extended the cardstock that I punched with my Word Window Punch; here it is. I also double-checked the measurement and it is not quite 3/8", it is between 5/16" and 3/8". For those of you who are challenged when it comes to measurements, most rulers are divided into 16ths, so 5 lines would be 5/16". Just place your cardstock between the 5th and 6th lines and you'll have the correct size. I find that there are quite a few people for whom reading a ruler is confusing. Having spent 13 years as a professional picture framer I'm not one of them, so I'm happy to clear up any confusion for those for whom it might be. Thanks for visiting!