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Table Saw Sled Base (MDF?)

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Forum topic by fivecodys posted 08-17-2015 08:52 PM 798 views 1 time favorited 10 replies Add to Favorites Watch
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fivecodys

581 posts in 1101 days


08-17-2015 08:52 PM

Topic tags/keywords: jig

Ok, so my old sled warped (thanks for all the replies on that thread) and I am in the planning stage for my next one.
My last sled had a 1/2” plywood (not birch) base and poplar fences.
What is the feeling of this group on using MDF as the base with hard wood fences?
It seems that the MDF might be less likely to warp.

Your thoughts?

Thanks in advance.

-- Chem, Central California


10 replies so far

View rhybeka's profile

rhybeka

2677 posts in 2587 days


#1 posted 08-17-2015 09:02 PM

Hmmm – I”m interested in this on myself. I’ve seen several versions of sleds made with MDF as a base. Let me see if I can pull any of them up and link them.

-- Beka/Becky - aspiring jill of all trades, still learning to not read the directions.

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firefighterontheside

13497 posts in 1322 days


#2 posted 08-17-2015 09:11 PM

My last sled was made with mdf. It lasted for many years. The only reason I made a new one was to make it bigger with a better guide. It should work just fine for you. My new one is MDO with a hardwood fence.

-- Bill M. "People change, walnut doesn't" by Gene.

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WhyMe

615 posts in 1026 days


#3 posted 08-17-2015 09:34 PM

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fivecodys

581 posts in 1101 days


#4 posted 08-17-2015 09:41 PM



Been discussed…
http://lumberjocks.com/topics/110658

- WhyMe

Thank you. That was a good read.

-- Chem, Central California

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WhyMe

615 posts in 1026 days


#5 posted 08-17-2015 09:58 PM

So what’s your conclusion?

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Pezking7p

3097 posts in 1117 days


#6 posted 08-17-2015 10:27 PM

Didn’t read all of the other thread but I will say my 1/2” mdf crosscut sled lasted about a year and wasn’t very good at holding up to daily use. The kerf wore out and made it difficult to know where to measure to, and the screws holding my fence down started to wiggle. I just remade it with plywood base and plywood fences. I used a double thick fence on the “user side” based on my past experience.

-- -Dan

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fivecodys

581 posts in 1101 days


#7 posted 08-17-2015 10:31 PM



So what s your conclusion?

- WhyMe

Well…It seems to me that both options are viable. I used cheap 1/2” plywood last time and we know how that ended up. I’m leaning towards a better grade of plywood and maybe even making the fences out of a couple pieces of plywood glued up to see if that is more stable than solid wood.

-- Chem, Central California

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fivecodys

581 posts in 1101 days


#8 posted 08-17-2015 10:46 PM

By the way,
Thank you all for your speedy responses.
This is a great resource when you need a little advice from people who understand where you are coming from.

-- Chem, Central California

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JeffP

573 posts in 857 days


#9 posted 08-17-2015 11:20 PM

Maybe the issue is less about “which wood” and more about using different wood for base and fence?

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.

View rwe2156's profile

rwe2156

2198 posts in 946 days


#10 posted 08-18-2015 02:25 PM


Well…It seems to me that both options are viable. I used cheap 1/2” plywood last time and we know how that ended up. I m leaning towards a better grade of plywood and maybe even making the fences out of a couple pieces of plywood glued up to see if that is more stable than solid wood.
- fivecodys
I think you’ve zeroed in on it.

Pros: MDF is flat.

Con’s: its heavy.

My sled is made of 3/4 MDF. Coated with shellac. Its very stable but very heavy.

Next one will be made of 1/2 Birch ply.

-- Everything is a prototype thats why its one of a kind!!

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