Sawmill

Twin Band-Mill In-Feed And Out-Feed Tables

The Problem: Lumber piling up and jamming at the end of the out-feed table.

The out-feed table connected to this band-mill, has to accelerate the sawn lumber to a velocity capable of launching the lumber onto the chain-way that follows.

The two driven rolls had used toothed metal inserts (inserts only work well when lumber is "pressed" against them), the inserts were removed and GetaGrip!™ F16GS applied to the rolls. In the lower picture you can clearly see the grooves where the inserts used to be. Inserts can be seen on the smaller press roll just ahead of the roll with GetaGrip!™.

One hour to apply the GetaGrip!™, 1/2 a day for it to cure, adjust the driven rolls RPM and they accelerate the lumber effectively and efficiently.

The in-feed table of this band-mill had used rubber coated rolls before being equipped with GetaGrip!™ F16GS. These pictures, taken a year later, show how little the GetaGrip!™ has worn.

Considering the downtime jam-ups caused.... this application of GetaGrip!™ F16GS had a payback of less than one shift.

Band Mill Getagrip! on roll in center

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Gang-Saw In-Feed Table

The Problem: Insufficient traction to push some cants into contact with the gang-saw in-feed.

This gang-saw in-feed table has three driven rolls that must drive the cants, down the center, into the gang-saw entrance.

Every moment this gang-saw is kept waiting for cants to saw into lumber, cost money! With GetaGrip!™ F16GS on these rolls and the right roll RPM, they keep the gang-saw constantly fed.

Gang-Saw in-feed

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Chip And Saw Out-Feed Table

The Problem: Lumber piling up at the beginning of the out-feed table.

The out-feed table connected to this Chip-N-Saw has to positively accelerate the sawn lumber, clearing the way for the next lumber to exit the chip-n-saw.

The two driven rolls had used welded bumps and patterns, they were ground off and GetaGrip!™ F16GS applied to the rolls.

One hour to apply the GetaGrip!™, 1/2 a day for it to cure, adjust the driven rolls RPM and they accelerate the lumber effectively and efficiently.

The cost of this chip-n-saw not cutting lumber is far more than the investment in GetaGrip!™. This application of GetaGrip!™ F16GS also had a payback of less than one shift.

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Board Dealer Wheels

Problem: Getting enough traction to place the boards in-between the chain lugs without marking the lumber.

Board dealer wheels have to rub on the board, without marking it, until the next chain lug is in position. The board is then let go and the dealer wheels must immediately propel the board into position on the chains.

Previous attempts used rubber and the rolls had to be adjusted as it wore down. knurling only works well if another roll presses the lumber against it. GetaGrip!™ F16GS works so well, this type of coating is applied by OEM's.

It is critical that board dealers work well, maximum efficiency is only attained when all the chain lugs are filled. GetaGrip!™ F16GS is the crucial link between the rolls and the lumber.

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Trimmer In-Feed Rolls

Problem: Boards entering the trimmer in the wrong position are trimmed the wrong length and become rejects.

Boards have limited space and time to be placed in precisely the right position, especially at high speeds. Poor traction necessitates higher roll RPM, higher roll RPM creates higher board velocity. High velocity causes the board to bounce when it hits the positioning fence. Without enough traction to hold the boards tight to the positioning fence, they enter the trimmer in the wrong position.

Coating several trimmer in-feed rolls the full length with GetaGrip!™ F16GS provides maximum traction, allows for lower roll RPM and slower board velocity. Almost no bounce occurs and boards hold tight to the positioning fence.

In the pictures on the right, two ineffective (and expensive) knurled and chromed rolls on this trimmer in-feed were ground flat, cleaned and coated full length with GetaGrip!™ F16GS.

Compared to knurling, GetaGrip!™ F16GS provides twice the coefficient of traction. After adjusting the RPM these rolls operate at, this trimmer in-feed will perform as it should.

Depending on the severity of the problem, this GetaGrip!™ F16GS application has a payback of between one day and one month.

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Trimmer Out-Feed Rolls

Problem: Boards in the wrong position after leaving the positioning fence, causing a reject board or stopped line.

Boards have limited space and time to reach and hold tight to the positioning fence, especially at high speeds. Poor traction necessitates higher roll RPM, higher roll RPM creates higher board velocity. High velocity causes the board to bounce when it hits the fence. Without enough traction to hold the boards tight to the positioning fence, they leave the fence in the wrong position.

Strategically coating the trimmer out-feed rolls with GetaGrip!™ F16GS provides maximum traction where its needed, allows for lower roll RPM and slower board velocity. Almost no bounce occurs and boards hold tight to the positioning fence.

These rolls were spinning twice as fast before being optimized with GetaGrip!™. Now the lumber moves precisely where you want it, every time. Lower roll RPM during maximum throughput is also easier on the machinery.

The pictures on the right show the diagonal pattern used in this application, only one third of each roll needs to GetaGrip!™. The 2 lower pictures, taken 3 years later, show that although the area between the aluminum oxide points has some pitch and fiber in it, the points stick through and the GetaGrip!™ continues to perform well.

Depending on the severity of the problem, this GetaGrip!™ F16GS application has a payback of between one day and one month.

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Transfer Rolls, Even-Ending Rolls

Problem: Again, more traction is needed for them to work efficiently.

There are rolls like this throughout most sawmills. They often go unnoticed, until there is a problem. The old solution was to stick on grip tape or weld more bumps. GetaGrip!™, there is a better way... that optimizes the operation of these rolls.

Everyone pays attention to the big pieces of equipment in a sawmill. Pay attention to the parts that connect and feed the big pieces, you get to put more through those big pieces. Then you can truly optimize your sawmill.

One hour to apply the GetaGrip!™ to a couple of rolls, 1/2 a day for it to cure, adjust the driven rolls RPM and they accelerate the lumber effectively and efficiently.

This GetaGrip!™ F16GS application has a payback that at this point, nobody cares about, they just know it works.

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In The End, Even A Little GetaGrip!™, Can Go A Long Way

Problem: Grabbing and moving pieces of wood with machinery, without the wood slipping off!

The pictures to the right show GetaGrip!™ F16GS applied to the tips of end-stacker forks, preventing that last board from slipping off.

GetaGrip!™ is easily applied to stick placer shoes and plastic J-bar hooks. J-bar hooks only require a two inch strip of GetaGrip!™ at the tips to prevent boards from slipping off during fast starts or stops.

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GetaGrip!™ F16GS On Sawmill Rolls

GetaGrip!™ F16GS is a coating applied to sawmills rolls that handle rough unfinished lumber.

Driven rolls are the most versatile method of moving lumber through the process of being converted from log to finished product. That is, providing the rolls GetaGrip!™ on the lumber.

Examples Of GetaGrip!™ F16GS In Sawmills

Twin Band-Mill In-Feed And Out-Feed Tables

Gang-Saw In-Feed Table

Chip And Saw Out-Feed Table

Board Dealer Wheels

Trimmer In-Feed Rolls

Trimmer Out-Feed Rolls

Transfer Rolls, Even-Ending Rolls

In The End, Even A Little GetaGrip!™, Can Go A Long Way

How Many GetaGrip!™ F16GS Kits Do Your Sawmill Rolls Need?