WHAT IS THE WELD LINE? When two or more plastic streams meet at different temperatures as the plastic is filling the mold cavity, the two streams may not correctly mix together. When this happens, it forms a weld line. These are indicated in the following pictures: The Reasons and Solutions...
As Mike notes, “It’s a bit more to fiddle with than just a spike. But in the frozen north you have to deal with ground conditions. Get yourself a cheap tripod and give it a try. Will also work well when the park will not let you stick anything in the ground or use a tree.”...
Why Use PVC Primer? PVC primer starts a chemical reaction that softens the PVC and washes away residue from the plastic surface. Primer reduces the chances of poor bonding between the PVC parts. Primer is typically dyed purple. This makes it easy for plumbing inspectors to see if primer was...
“levers” you can pull to manipulate its final form — temperature, pressure, flow rate, and cooling rate/time. Most molders use melt flow index (MFI) or do a rheological study to evaluate how the plastic will flow and perform during injection, but the results tend to have little ...
In the process, a laser beam is programmed to create a design on a range of possible materials. Those materials can be organic, like paper, stone, wood, rubber and leather, or they can be plastic or metal. Lasers create a nicely polished edge as they vaporize or cut controlled portions ...
Use some 2 part epoxy. The plastic weld stuff off the shelf from any hardware store will work fine. https://www.jbweld.com/product/plastic-bonder-syringe White glue? Like white school glue or something else? I'd never in a million years expect white school glue to hold these parts toge...
If your keyboard has two FPC cables, you may be able to insert them side by side in one FPC connector or solder two FPC connectors on the board as shown above. It's common for one FPC cable to have top contacts and the other to have bottom contacts. Use some JB-Weld epoxy on the...
Then I used JB Weld epoxy to attach three mounting bolts to the cap. The hub that came with the new blades is drilled for mounting up to six blades, but I am only using three, so there are extra holes in the hub that can be used for mounting the nose cone. I actually put the ...
Once the chemical stripper has softened the adhesive, use a scraping tool to remove the Jb Weld from the metal surface gently. Take care to avoid scratching or damaging the metal. If necessary, repeat the process for stubborn or thicker layers of adhesive. ...
One way to temporarily patch a leaky freeze plug is to clean the surface of the plug, sand it lightly with sandpaper, and pack it solid with a high temperature two-part epoxy such as gas tank sealer or JB Weld epoxy. Let it cure overnight. This trick usually seals leaky expansion ...