To start the saw in cement backer board drill a hole though the backer board large enough for the jigsaw blade or make a plunge cut with the blade in the backer board.
Cutting hardie board siding with jigsaw.
Make sure to go slower than with a normal blade and wood.
For those who want to ensure the cutting line in the hardie board or a beginner you are able to try a jigsaw.
To keep dust to a minimum use a circular saw that s equipped with either a dust collection bag or electric fan that blows dust into a bucket.
Keep a firmer grip on the board than with regular wood.
Setting up your cutting station correctly is just as important as selecting the right tools.
No way would i rip fiber board of any kind without dust collection.
Mark where you d like to cut the board.
James hardie has collaborated with a number of installers to identify easy setups that are effective affordable and will help you meet osha s compliance standards.
The bosch carbide edge jig saw blade provides 10x life versus standard bi metal blades featuring a carbide tipped edge designed for cutting abrasive building materials.
A thin blade kerf reduces material extraction reduces heat and adds to performance.
Unlike score and snap you ll need to use a surface.
Always be sure to wear dust and eye protection when cutting cement backer board.
The hardi blade only has four teeth.
You should take a jigsaw with a metal blade or a carbide grit blade.
So this one jig saw blade really provides the confidence to make clean cuts in hard material.
When cutting fiber cement siding with circular saw use a blade that has only four or six teeth.
Wait for the saw blade to warm up and come to full rpm before.
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Cutting station best practices.
Just sharing some of the different methods i ve used for cutting hardieboard siding.
Cut the trim board with the saw.
Havent tried the jigsaw blade or an actual hardi blade for circular saw.
You should take a jigsaw with a metal blade or a carbide grit blade.
Like the score and snap method set a straightedge across your sheet.
It also snaps the end of the cut so the siding has to be cut face up with the bottom toward you.