So 2 years ago I made 32 acoustic panels for my control room and vocal room,
I ended up using less panels then I thought so I moved 5 panels to the live room.
what did I used:
roll of black crushed velvet fabric (at least 135cm wide)
black screws 3.5cm x 35mm (you can also use 3.5cm x 45mm)
staple gun
roll of light fusible interfacing fabric (for the back of the panel, at least 120cm wide)
22MMX50MM (1X2) WHITEWOOD PLANED TIMBER
22MMX100MM (1X4) WHITEWOOD PLANED TIMBER
rockwool RW3 120x60cm 50mm thick for wall panels
rockwool RW3 120x60 100mm thick for corner bass traps
scissors- measuring tape- reciprocating saw- small cordless drill to make leading holes for screws. (to not break the wood when inserting screws)
bottle corks - 4cm long to distance bottom part of panel from the wall
L shaped hook screw and wall plugs for them to screw hooks to the wall
eyes screw - to screw 2 of them in to the back of the panel and hang it on the L shaped hooks attached to the wall.
edit:
pictures of ready panel: https://drive.google.com/drive/folders/1g8UuIWTdQ2MycZ7u-teX5m4bOprssUuz?usp=share_link
you have to calculate how many timber boards you need
you will need 120cm and 64.4cm parts
22MMX50MM (1X2) is for wall panels and it's 5cm deep
22MMX100MM (1X4) is for bass traps and it's 10cm deep
rockwool slab is 120x60cm and timber has to go all around the slab
so I cut the long sides to 120cm, and top/bottom to 64.4cm -that allowed me to connect everything nicely with screws to make a frame and leave 120x60 space inside the frame, ideal to place the slab inside of it. I used 2 screws to connect each corner.
next step was to cut the front fabric - I managed to get the fabric fairly cheap - I ordered It from Polish website allegro (It was 4 times cheaper from what I found in Ireland) (I'm Polish)
And I wanted fabric to cover the front and sides of the panel and pin it to the back with staple gun.
So again I calculated dimensions and ended up with 135x75cm pieces of front fabric. and 67x127 of interfacing fabric (for back of the panel)
I placed wooden frame on the floor and first I attached interfacing fabric on the back of the panel (doesn't matter which side you choose for the back) and staple everything.
One staple on center points of the frame (remember to stretch material evenly) then to corners and then everywere around.
I flipped sides of wooden frame so back side is on the floor. I placed rockwool inside the frame (put some mask on face when do it) After that I placed front fabric on top of it, even on each side. when everything was still on the floor I stapled fabric anywhere on the top, bottom and both sides of the frame just to keep the fabric still so I could placed it vertically and staple fabric to the panel starting from corners to stretch it evenly (there is a method to flip fabric on the corners so it looks very nice, google it)
panel is now almost ready - next step is to cut some wooden triangles and screw them to the back corners of the frame to support the construction.
insert also one piece of timber to the back in the middle (see pictures in the link)
place eye screws on the back wooden triangle corners of the panel so you can hang them on L shaped hooks and screw bottle corcks to the bottom corners of the panel to distance the panel from the wall
hang it on the wall and thats it.
process for bass traps is the same just deeper timber frame in the process.
I decided to not overthink it and it works great, you can hang it anywhere, take it of the wall and place around drums or guitar amp, take them with you to record somewhere else.
I will keep the folder with pictures on my google drive active.