I routinely sew smaller bits (less than an inch) together for crumb blocks and have never had a problem with too much bulk, but I heavily starch and press until the seams are very flat and if necessary I pound them with a hammer (tailors trick). Not sure if you’ve seen some of the “inchies” posted on the internet, but if you do a search for inchies you’ll see a lot of interesting work.
edited to add- I do my own quilting so am not as concerned with bulk as a long armer might be.
Rob
Last edited by rryder; 03-29-2018 at 09:53 AM.