![]() The contact drum sandwiches the belt splice between itself and the wood being sanded so when the thickness of the belt is different than the splice, the rest of the belt is prone to leaving a mark. This is also very common with woodworking and a special made product This is another form of adding a scuff free joint when sanding across your work piece. Tape on Top – A tape on top joint is just that, a sanding belt joint with the tape on top of the belt as opposed to on the back side of the sanding belt.This is most common in wood or furniture manufacturing. This is used specifically on cloth x weight sanding belts where the joint is leaving a scuff on your work piece. Top Skive – For a top skive belt, the abrasive grain near the joint is removed and shaved off using our scuffing machine.This is very common to see on everything from narrow belts to wide belts and even belts for Hetran type machines. This pattern allows the belt to run smoothly, without hinging in either direction. This joint is most common in glass fabrication or woodworking operations. Sine-Lock Splice – This splice is similar to the butt splice in that the joint joins directly with each other, however this has a wave like or zig-zag pattern going along the joint.The normal angle for this butt splice is 67 degrees. The downside with the butt splice is that it is not a 0 tolerance joint however most operations this is not a problem. It is very common for most sanding belt materials to have an arrow pointing in a specific direction that is essentially an instruction that manufacturer and the customer must abide by if they are making what’s called an “overlap splice” which I will discuss later. The butt splice is a splice that will allow your belting operation to be run bi-directionally, meaning it doesn’t matter which way you slide the belt on the machine. Butt Splice – This is by far the most common type of joint that you will see and in most cases this is the best option. ![]() There are 5 main types of joints to consider for your operation: ![]() In this article we will be talking about one of the most important aspects of a sanding belt – the splice, which Is the point where the sanding belt is joined together to form a “belt.”
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