I made a bag/backpack for carrying around my Alphorn.
As with many things on this site, I post not as an expert, but as a person sharing how he did something. I wanted a carrying case that I could also wear on my back, to carry the 3 piece Alphorn I made link to my Alphorn building page here!.
I will not get into too many details of how I stitched this Alphorn case/bag/backpack, because I do not feel qualified to give advice on sewing, but I wanted to share what my Alphorn bag looks like, so here goes. We do have a basic sewing machine in the house, shown in the photo below, and I used that for this project, along with hand stitching.
Making felt sleeves for the alphorn bag:
There will be three felt "Bags" or what I would call "sleeves" that I will put the alphorn sections in before putting them in the Alphorn carrying bag.
First I stitched together 3 felt sleeves designed to fit the three sections of the alphorn. These sleeves are tapered to fit the alphorn sections. I stitched them on the sewing machine and then turned them inside out so that the stitched hems were on the inside of the bags. I used a zig zag stitch on the sewing machine to make a strong hem.
Making the Alphorn Carrying Bag:
My Alphorn sections are about 4' each, so I made the bag 54" long to leave fabric for when I cinch up the top. I bundled up the alphorn sections as shown above, then measured the required diameter of the bag at various locations along the length of the bundle. I multiplied these diameters by 3.14 to determine the fabric pattern. I then added an extra inch for hems and 1/2" for foam in case I add that later.
I measured the bundled up Alphorn sections and came up with the shape I wanted to hold them. I left extra room to fit in 1/2" thick foam sheet around the inside of the bag. Here I have cut the shape into heavy cotton duck fabric. NOTE that in this photo the fabric is doubled up. The right edge of the fabric in the photo is where it is folded. I will open this up like a butterfly as seen in the next photo.
Next I positioned the bag, full of the horn sections, on my back to try to feel which orientation would be the most comfortable to carry it in. Then I marked where to put the shoulder-strap attachment points. I used spacing for the attachment points based on a backpack I have. I hand stitched circular patches of cotton duck fabric over the locations where I will stitch in the strap attachment points.
Making Shoulder Straps for the Alphorn bag
I again used an existing backpack to determine how long to make the straps. I found 27" complete length from where the strap leaves the bag to where is returns to the bag, to be the correct length.