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Thread: Cutting MDF with a jigsaw

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    Cutting MDF with a jigsaw

    Hi all,

    Was wondering if its possible to cut both side panels with the jigsaw by clamping two pieces of 18mm MDF together or will the cut end up being too crap? I realize the jigsaw blade has some flex in it so even single panel cuts results in a slightly wobbly feel when running my finger along regardless of cutting directly along the line. I was thinking two panels will probably make this wobble even more noticeable.

    Or should I just mark one piece from the other?

    Cheers
    Derek.

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    throw out your jigsaw and get one of these. i bloody love mine!


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    Quote Originally Posted by Jed View Post
    throw out your jigsaw and get one of these. i bloody love mine!

    What it that? I think I need one!

    Sent from my SM-G955F using Aussie Arcade mobile app

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    Quote Originally Posted by megaderek View Post
    Hi all,

    Was wondering if its possible to cut both side panels with the jigsaw by clamping two pieces of 18mm MDF together or will the cut end up being too crap? I realize the jigsaw blade has some flex in it so even single panel cuts results in a slightly wobbly feel when running my finger along regardless of cutting directly along the line. I was thinking two panels will probably make this wobble even more noticeable.

    Or should I just mark one piece from the other?

    Cheers
    Derek.
    Jigsaws don't like cutting thick pieces and you will end up with a badly tapered edge.
    I would suggest cutting as many straight edges as possible with a circular saw, then rough cutting the remaining edges on one panel at a time and then finishing it off with a router
    You can use the first panel as a template for the router for the second panel.

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    Quote Originally Posted by megaderek View Post
    Hi all,

    Was wondering if its possible to cut both side panels with the jigsaw by clamping two pieces of 18mm MDF together or will the cut end up being too crap? I realize the jigsaw blade has some flex in it so even single panel cuts results in a slightly wobbly feel when running my finger along regardless of cutting directly along the line. I was thinking two panels will probably make this wobble even more noticeable.

    Or should I just mark one piece from the other?

    Cheers
    Derek.
    I find it best to cut one Piece and get it perfect, then Use a router to cut the second piece, using the first one as a template. Much better result
    using this type of bit

    bit.jpg

    Edit, Boots beat me to it lol
    Last edited by jason1; 9th January 2019 at 02:16 PM.

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    Quote Originally Posted by nmercury View Post
    What it that? I think I need one!

    Sent from my SM-G955F using Aussie Arcade mobile app
    It's a mini chainsaw.
    Pretty neat device.

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    that mini-chainsaw looks good, might give that a go next time (running a tight budget on this one)

    I have a flush cut router bit although the blade length is 20mm so would that be okay for 18mm MDF as it'd only be 1mm either side at best? or can it be done in two overlapping goes?

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    Quote Originally Posted by nmercury View Post
    What it that? I think I need one!

    Sent from my SM-G955F using Aussie Arcade mobile app
    it's a nanoblade chainsaw. A brilliant device for DIY'ers that cuts neater, at variable speeds, and you can plunge cut with ease, no need to pre-drill like you need to with a jigsaw.

    it really is the ducks guts, get one, you wont regret it

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    Quote Originally Posted by jason1 View Post
    I find it best to cut one Piece and get it perfect, then Use a router to cut the second piece, using the first one as a template. Much better result
    using this type of bit

    bit.jpg

    Edit, Boots beat me to it lol
    Yep, this is how I do it.
    When using 8mm MDF I'll make a template first out of 16mm MDF (less effort sanding) then use that to make the first side panel, use it to trace the rough outline of the second panel, rough cut with a jigsaw/circular saw with about 5mm overlap then flush trim the second panel around the first panel.
    I can quickly knock up another cab next time using the template.

    The mini chainsaw is a brilliant idea, will have to look into getting one.
    Last edited by Kaizen; 10th January 2019 at 04:54 AM.
    Namco Starblade - Taito Cocktail 14" x 3, 20" x 2 - NZ SI PtII Upright - Chase HQ DX, Taito Top Speed - Taito Grand Champion - Taito Safari - LAI SI Head to Head Cocktail - SI Cocktail Clone x 2, Pong Clone x 3

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    Just to add, make sure you have good breathing protection
    And no washing on the line if doing it outside

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