Sewing Machine Won't Sew on Uniform Fabric?
Try using a Denim needle. It is made for tough fabrics. Also, some of the bargain thread has a tendency to break, especially when sewing on heavier fabrics. Make sure to use a quality thread. Hope this helps.
Singer Sewing Machine Won't Sew?
Sounds like either the wheel was not re-engaged after winding a bobbin, or you have a broken band. Best to take it in for a tune up and repair. It is probably something very minor.
Using Aloe Vera Juice for First Aid?
Yes, but fresh is much better. Aloe is very easy to grow and you just cut off a bit whenever you need it for cuts, burns, rashes and a variety of other uses. Just scrape the pulp and use as desired, either as a topic solution or in a beverage.