What is Reddit's opinion of 3M Super 77 Multipurpose Permanent Spray Adhesive Glue, Paper, Cardboard, Fabric, Plastic, Metal, Wood, Net Wt 16.75 oz?

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I used to have that issue. The reason I was having so much trouble is that i didn't use enough adhesive to hold it down. I use a heavy coating of the 3M Adhesive spray. (Link). Be sure to coat both the fabric and the shield with it. My current shield has had the same shield cover on it for the past 6 months with only a tiny bit of fraying on the bottom.

The next step to get a machine through "one more job" is to hit the chain with 3M Super 77

Used to do this professionally.

Foam: https://www.thefoamfactory.com/seatcushion/foamtypes.html

You want to use closed cell foam, if possible. Open cell foam can absorb water and fluids(yick).

Temporary Adhesive: 3m77 is the best overall adhesive to prevent movement. It is NOT a permanent adhesive. https://www.amazon.com/3M-77-Multipurpose-Adhesive-Aerosol/dp/B0000AZ735/ref=sr_1_3

Permanent adhesive: Barge cement or weldwood. Both are equally good. Many brands advertise different names, but it's repackaged barge or weldwood (you can get a 55 gal drum). It tends to be more rigid so its only suitable for adhesing to a solid base, like foam to wood or foam to metal. https://www.amazon.com/00271-Weldwood-Original-Contact-Cement/dp/B0006MXRY8/ref=pd_lpo_vtph_200_lp_t_3

Upholstery leather: While Tandy is the cheapest source, they generally sell second quality hides that are factory overruns or seconds. A better source is either the Carroll Leather company or the Hide House. Both are excellent. You want a fully protected corrected grain hide in the 3-4 oz range. The hide should be a full hide, not half, which is approximately 55 sqft. Both companies will sell you a single hide. Estimate about $8 sqft, including shipping. My preference is the Carroll Leather company because they have a better online catalog, but both companies will send you samples if you ask nicely. Both are excellent reputable companies. http://www.carrollleather.com/colours

and https://hidehouse.com/products/index.html?Category=FETI

Also, if you plan to stuff any enclosed leather items, like pillows, you will need spray silicone to ease the stuffing. http://www.upholsterysupplyonline.com/products/Pro-Slip-Dry-Silicone-Spray-Case-Of-12.html

You might need some upholstery tacks and a tack hammer. https://www.vandykes.com/upholstery-tacks-nails-tools/c/1696/

Alternatively a good staple gun works well. Do not use the electric ones. They're expensive and usually don't work as well as the manual ones https://www.amazon.com/Arrow-Fastener-T50-Heavy-Staple/dp/B00002ND61/ref=sr_1_4

For random hardware, try https://ohiotravelbag.com/ and https://www.buckleguy.com/The company behind buckleguy makes the hardware for Coach bags, so it is usually superior quality.

If you sew anything, use polyester thread, NOT nylon. Nylon absorbs water, and breaks down under exposure to UV. Polyester is what the boat upholstery guys use because it stands up over time.

Pro tip: expect to use twice as much leather as you think. It takes a lot of experience to correctly judge upholstery dimensions and usage. Also, pull the leather tighter than you think. Go slow, measure twice, cut once, and realize that leather stretches in two directions.

Edit: Marine vinyl is a good substitution for leather. It's non porous, and easily cleaned. Fabric is measured by the yard, which means the width of the roll (usually 54") x 1 yard long. Quality vinyl is ~$10-$20 per yard, which is about 1/4 the cost of quality leather. https://www.joann.com/marine-vinyl/prd23669.html or https://fabricwarehouse.com/discount-marine-vinyl-fabrics/

yeah sounds good. also, depending on how much you lift (less than 300lb) or if you don't drop it overhead, 4 inches thick would perfectly fine and make the pad 4 sqft instead of 6, you could cut the cost to only $40. btw for sticking them together don't use liquid glue since they keep layers separated and break under impact. use this instead

https://www.amazon.com/3M-Multipurpose-Permanent-Adhesive-Cardboard/dp/B0000AZ735

good luck

The super 77. https://www.amazon.com/3M-Multipurpose-Permanent-Adhesive-Cardboard/dp/B0000AZ735

https://www.amazon.com/3M-Multipurpose-Permanent-Adhesive-Cardboard/dp/B0000AZ735

Use this stuff

Get 8 of these and stick them together 4 on each side. They can easily take 300-400 lbs this way. I use one on each side but I am just using 150 lbs due to back issues.and I dont feel any vibration.

https://www.harborfreight.com/safety/knee-pads-supports/heavy-duty-foam-kneeling-pad-56572.html and liquid spray glue like this to stick them https://www.amazon.com/gp/product/B0000AZ735/ref=ox_sc_saved_image_1?smid=ATVPDKIKX0DER&psc=1 . You could also add a ply underneath the pads and cover them with some vinyl fabric.

Not OP but this stuff works like a charm. https://www.amazon.com/dp/B0000AZ735/ref=cm_sw_r_cp_apa_i_vSAoFb9AAJ0HR