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planer sled question

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Forum topic by Ross1985 posted 11-29-2021 12:29 AM 609 views 0 times favorited 9 replies Add to Favorites Watch
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Ross1985

16 posts in 441 days


11-29-2021 12:29 AM

I plan to make a planer sled out of MDF for my 13” Dewalt planer. I wanted to use 3/4” thick MDF, however, I can only buy 3/4” in 4’ x 8’ dimensions at $61.99 per sheet. I notice that 5/8” thick MDF is available in 16” x 96” for $16.99 each. I was thinking of using 5/8 instead since it’s much cheaper. Could I glue or screw two pieces of 5/8” thick MDF on top of each other, which would make it 1 1/4” thick? Would this be better than 3/4”? All I know is thicker is better when making a planer sled, so it doesn’t bend. Thanks


9 replies so far

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MrUnix

8845 posts in 3529 days


#1 posted 11-29-2021 12:43 AM

I made one out of melamine shelf material.. 3/4” thick. I believe a 4 foot board was around $10 at the BORG. Get two pieces and make an auxiliary table (bed) while you are at it ;)

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Gene Howe

12469 posts in 4759 days


#2 posted 11-29-2021 10:21 AM

Check out YouTube. All sorts of ideas there.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

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controlfreak

3192 posts in 932 days


#3 posted 11-29-2021 10:28 AM

A lot of of the big box stores will get some 4×8 sheets that are dinged on one corner or edge. They cut those up into 4×4 or smaller pieces and have them in there own section.

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OSU55

2936 posts in 3320 days


#4 posted 11-29-2021 04:18 PM

As Mr Unix said, look at melamine shelving boards. Thicker is not better, really. You need in and outfeed tables to support the length not in the planer, the portion in the planer is pushed into the planer bed. 5/8” will work.

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Ross1985

16 posts in 441 days


#5 posted 12-01-2021 01:23 AM

I was thinking about melamine, but was worried the pieces might slide on the surface, as I was thinking MDF would provide more friction. What do you do to keep pieces from moving around on the planer sled?

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OSU55

2936 posts in 3320 days


#6 posted 12-01-2021 02:32 PM

2 motions of the planed piece to control. Rocking and the planer blades spitting it out the back. Shim the board to prevent rocking, some use a hot glue gun to hold them, double sided tape, or nothing (usually how I do it), then a board across the back end of the sled, I use double sided tape to hold it, which is a “stop” to prevent the board spitting out the back. Different thickness anchor boards depending on the planed thickness and the end shape of the planed board. The melamine holds the tape or glue well and residue can be cleaned off, unlike mdf.

I use popsicle sticks taped together for different thicknesses as shims. Dont over engineer it.

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Ross1985

16 posts in 441 days


#7 posted 12-03-2021 12:48 AM



2 motions of the planed piece to control. Rocking and the planer blades spitting it out the back. Shim the board to prevent rocking, some use a hot glue gun to hold them, double sided tape, or nothing (usually how I do it), then a board across the back end of the sled, I use double sided tape to hold it, which is a “stop” to prevent the board spitting out the back. Different thickness anchor boards depending on the planed thickness and the end shape of the planed board. The melamine holds the tape or glue well and residue can be cleaned off, unlike mdf.

I use popsicle sticks taped together for different thicknesses as shims. Dont over engineer it.

- OSU55


Thanks! Just curious, why don’t you secure the “stop” with something more permanent?

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OSU55

2936 posts in 3320 days


#8 posted 12-03-2021 12:58 PM

I change the stop block thickness depending on the board – how far off the sled the back end of the board is initially. Also how thick or thin I’m planing. You could use screws but will need an insert in the mdf core – it wont take too many screw changes without coming apart. Also requires dedicated stop boards with drilled holes. Can also screw from underneath, but limits the min thickness of the stop board. Screws also provide the opportunity to nick or trash planer blades with one mistake.

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bigblockyeti

7949 posts in 3051 days


#9 posted 12-03-2021 01:05 PM

2 sheets of 5/8” MDF 13” wide x 8’ long would be quite heavy before adding whatever you’ll use to keep the work from moving plus the weight of the work itself could end up being very heavy. Stiff is what you want and at very much length, MDF does’t have it, melamine does and it’s lighter too. You could use traction tape to keep the work from sliding around on the sled to supplement whatever other measures you employ to keep the work and sled together.

-- "Lack of effort will result in failure with amazing predictability" - Me

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