GD

Glen Duff

14/02/2004 9:05 AM

Running Steel through Thickness Sander

I would be interested to hear the pros and cons of running flat steel
bars through my Performax Thickness Sander.

This all started when I decided to purchase carbide jointer blades for
my old, 6" Delta jointer and measured up my current blades to find they
were 3/32" thick. The replacement blades are 1/8" thick so before
ordering I wanted to make sure they would fit my jointer.

To check on this I made a 6" x 5/8" x 1/8" thick maple strip and tried
replacing one of the blades. The backing bars were a bit gummy with
some superficial rust so I cleaned them and found the maple strip did
not quite fit in with the tightening bolts backed up as far as they
would go but it was very close. I then ran it through my thickness
sander using a n old 240 grit sandpaper roll. I obviously applied the
absolute minimum pressure so it could barely be heard and it cleaned and
polished the bar beautifully. In total maybe a little over a quarter of
a turn on the adjustment and about 6 or 7 passes, the maple strips now
slides easily into the jointer head.

I am not recommending this or planning to do anything similar in the
future but it worked for me.

Has anyone else tried something similar?

With thanks,

Glen Duff


This topic has 8 replies

PA

"Preston Andreas"

in reply to Glen Duff on 14/02/2004 9:05 AM

14/02/2004 10:47 PM

Are you sure the 1/8" blades won't work? I too had an old Delta jointer and
bought 1/8" replacement blades. They barely fit, but they did go in. And
as I was told by my supplier and found out by myself. Even if the new
blades are thicker than was called far, as long as they fit and can be
tightened down, they will work fine.

Preston

"Glen Duff" <[email protected]> wrote in message
news:[email protected]...
> I would be interested to hear the pros and cons of running flat steel
> bars through my Performax Thickness Sander.
>
> This all started when I decided to purchase carbide jointer blades for
> my old, 6" Delta jointer and measured up my current blades to find they
> were 3/32" thick. The replacement blades are 1/8" thick so before
> ordering I wanted to make sure they would fit my jointer.
>
> To check on this I made a 6" x 5/8" x 1/8" thick maple strip and tried
> replacing one of the blades. The backing bars were a bit gummy with
> some superficial rust so I cleaned them and found the maple strip did
> not quite fit in with the tightening bolts backed up as far as they
> would go but it was very close. I then ran it through my thickness
> sander using a n old 240 grit sandpaper roll. I obviously applied the
> absolute minimum pressure so it could barely be heard and it cleaned and
> polished the bar beautifully. In total maybe a little over a quarter of
> a turn on the adjustment and about 6 or 7 passes, the maple strips now
> slides easily into the jointer head.
>
> I am not recommending this or planning to do anything similar in the
> future but it worked for me.
>
> Has anyone else tried something similar?
>
> With thanks,
>
> Glen Duff
>

GD

Glen Duff

in reply to Glen Duff on 14/02/2004 9:05 AM

15/02/2004 7:25 AM

Considering how little I sanded down on the hold down bars I'm not
surprised you could fit in a 1/8" blade. The 1/8" thick sample hardwood
I made did not quite fit in but it may have been as much the gum and
superficial rust. However, a little sanding will make them easier to
fit in and the ends of the holding screws will still be well away from
the blades.

Anyway, it seemed to work well for me.

Glen Duff
---------------------------

Preston Andreas wrote:

> Are you sure the 1/8" blades won't work? I too had an old Delta jointer and
> bought 1/8" replacement blades. They barely fit, but they did go in. And
> as I was told by my supplier and found out by myself. Even if the new
> blades are thicker than was called far, as long as they fit and can be
> tightened down, they will work fine.
>
> Preston
>
> "Glen Duff" <[email protected]> wrote in message
> news:[email protected]...
>
>>I would be interested to hear the pros and cons of running flat steel
>>bars through my Performax Thickness Sander.
>>
>>This all started when I decided to purchase carbide jointer blades for
>>my old, 6" Delta jointer and measured up my current blades to find they
>>were 3/32" thick. The replacement blades are 1/8" thick so before
>>ordering I wanted to make sure they would fit my jointer.
>>
>>To check on this I made a 6" x 5/8" x 1/8" thick maple strip and tried
>>replacing one of the blades. The backing bars were a bit gummy with
>>some superficial rust so I cleaned them and found the maple strip did
>>not quite fit in with the tightening bolts backed up as far as they
>>would go but it was very close. I then ran it through my thickness
>>sander using a n old 240 grit sandpaper roll. I obviously applied the
>>absolute minimum pressure so it could barely be heard and it cleaned and
>>polished the bar beautifully. In total maybe a little over a quarter of
>>a turn on the adjustment and about 6 or 7 passes, the maple strips now
>>slides easily into the jointer head.
>>
>>I am not recommending this or planning to do anything similar in the
>>future but it worked for me.
>>
>>Has anyone else tried something similar?
>>
>>With thanks,
>>
>>Glen Duff
>>
>>
>
>

UA

Unisaw A100

in reply to Glen Duff on 14/02/2004 9:05 AM

14/02/2004 8:30 AM

I remember seeing where Timesaver reversed the direction of
the abrasive belts on their wide belts for sanding metals,
i.e., the typical wood sander abrades towards the infeed
side/throwing dust up onto the unsanded part of the board
whereas the metal sanders throw onto the freshly abraded
surface, i.e., and forevermore, bass akwards to what we are
used to. I suspect they (the metal sanders) have to have
one hellava holding system to keep the metal from shooting
through the sander.

There also may be an issue with feet-per-minute speeds of
wood sanders especially if you are wanting to sand something
that you want to hold and edge later on, i.e., don't want to
screw up tool steel with heat generated.

Just a thought.

UA100

fF

[email protected] (Fred the Red Shirt)

in reply to Glen Duff on 14/02/2004 9:05 AM

16/02/2004 8:48 AM

Glen Duff <[email protected]> wrote in message news:<[email protected]>...
> I would be interested to hear the pros and cons of running flat steel
> bars through my Performax Thickness Sander.
>

I suggest you clean up all the sawdust in the shop and keep a
fire extinguisher handy. You may get lots of sparks.

I once lit my pants on fire using a bench grinder.

--

FF

n

/..

in reply to Glen Duff on 14/02/2004 9:05 AM

25/02/2004 10:16 PM

By 16 Feb 2004 08:48:33 -0800, [email protected] (Fred the Red Shirt)
decided to post "Re: Running Steel through Thickness Sander" to
rec.woodworking:

>Glen Duff <[email protected]> wrote in message news:<[email protected]>...
>> I would be interested to hear the pros and cons of running flat steel
>> bars through my Performax Thickness Sander.
>>
>
>I suggest you clean up all the sawdust in the shop and keep a
>fire extinguisher handy. You may get lots of sparks.
>
>I once lit my pants on fire using a bench grinder.

Sorry, but it had to be said:

"LIAR LIAR."

/ts

Ba

B a r r y

in reply to Glen Duff on 14/02/2004 9:05 AM

16/02/2004 7:20 PM

On 16 Feb 2004 08:48:33 -0800, [email protected] (Fred the Red
Shirt) wrote:


>I once lit my pants on fire using a bench grinder.


Many have done the same thing rough grinding a chisel bevel on a belt
sander. <G>

Barry

tt

tmbg

in reply to Glen Duff on 14/02/2004 9:05 AM

14/02/2004 3:36 PM

I'm pretty sure he was talking about sanding the hold-down bars so that
the slightly thicker carbide knives would fit...

BTW, my grizzly widebelt's drums spin so that they pull away from the
infeed... if you take too heavy a cut, sometimes stuff does infact shoot
toward outfeed at amazingly high velocity

On Sat, 14 Feb 2004 16:22:42 +0100, Juergen Hannappel wrote:

> Glen Duff <[email protected]> writes:
>
>> I would be interested to hear the pros and cons of running flat steel
>> bars through my Performax Thickness Sander.
>>
>> This all started when I decided to purchase carbide jointer blades for
>> my old, 6" Delta jointer and measured up my current blades to find
>> they were 3/32" thick. The replacement blades are 1/8" thick so
>
> [...]
>
>> I am not recommending this or planning to do anything similar in the
>> future but it worked for me.
>
> SO did you try already? BTW: "carbide" is not steel, but at least with
> carbide you have no problem with heat softening. Maybe you need a
> different sanding belt, and also you have to theink on how you mount
> the new blades so you don#t change tha cutting angles.

JH

Juergen Hannappel

in reply to Glen Duff on 14/02/2004 9:05 AM

14/02/2004 4:22 PM

Glen Duff <[email protected]> writes:

> I would be interested to hear the pros and cons of running flat steel
> bars through my Performax Thickness Sander.
>
> This all started when I decided to purchase carbide jointer blades for
> my old, 6" Delta jointer and measured up my current blades to find
> they were 3/32" thick. The replacement blades are 1/8" thick so

[...]

> I am not recommending this or planning to do anything similar in the
> future but it worked for me.

SO did you try already? BTW: "carbide" is not steel, but at least with
carbide you have no problem with heat softening. Maybe you need a
different sanding belt, and also you have to theink on how you mount
the new blades so you don#t change tha cutting angles.

--
Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
mailto:[email protected] Phone: +49 228 73 2447 FAX ... 7869
Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23


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