Re: Jet JWP-12 thicknesser first impressions

Bee,

If you have a long ruler/ metal meter stick, try putting it across the infeed table-across the cutting head area up to the outfeed table to check for flatness. I'm sure you can build an extension infeed/outfeed table later on. For the mean time, try supporting the plank as you feed it in as well as supporting it as it goes out. Just make sure you keep the plank level. Hope this helps.

Re: Jet JWP-12 thicknesser first impressions

Will do that Workbench.

A question. Can you run rough lumber straight to a thicknesser without going through a jointer? I suspect if there is alot of variance in the thickness of the piece the planed side wont be truly flat.

If ever i get hold of rough lumber it would be great if i can just run both faces on the planer and not to the jointer since my jointer is only 6" wide.

at the narra piece i checked flatness. It was really flat. 🙂

Re: Jet JWP-12 thicknesser first impressions

If the lumber is straight then yes you can do that. I do it all the time. The thicknesser will make two sides parallel. After I do this, I run it through the jointer to get a 3rd side square, then it is back to the thicknesser for the 4th side. With planks, it is better to use the table saw then the jointer to get the 4th side.

The problem is if the lumber is twisted then resawing is necessary.

Re: Jet JWP-12 thicknesser first impressions

Can you run rough lumber straight to a thicknesser without going through a jointer?

If question is, can thickness planer be used to produce reference surface number 1, I think that in general the answer is yes, iff following two conditions are met --

First, as the wood moves through the tool, each point in the wood moves in a line (or in general, plane) and all such planes are parallel (to each other). Second, axis of rotation of cutter is parallel to the planes and at a constant distance from any particular plane. (Strictly speaking, I think this second condition is 'sufficient' but not 'necessary'.)

If the motion of the wood through the tool can be made to satisfy the above, then one such pass or multiple such passes would produce reference surface number 1.

It looks like most people try to do the above with sleds and associated wedges/immobilizers, but I seem to remember reading somewhere about a way that does not need a sled nor a router-as-jointer first.

As for router-as-jointer first, I saw a method that requires producing only two small strips of surface 1, saving time and wear/tear on your router bit, and then using the thickness planer to complete surface 1 two steps later. No sled needed.

Re: Jet JWP-12 thicknesser first impressions

Bee,

Shouldn't be a problem as long as whichever the bottom side of your plank is flat. Even if its rough, it should feed into the planer smoothly. Once you get one side done its smooth sailing from there.

BTW, will be going to Taytay tomorrow, anyone interested in joining me?

Re: Jet JWP-12 thicknesser first impressions

feeding rough wood into the thicknesser is ok as long as it isn't twisted or cupped, or you should have a flat side to begin with, if you have either imperfection in your material, a bed is important to get that reference side. without the bed, the twist or cupping will resonate only from the bottom table to the cutting edge of your thicknesser and the result will give you a twisted or cupped side as well... there are lots of plans online and free regarding this matter, I want one soon but my limited space stops me from making one.... I would probably make a flip top thicknesser stand instead for mobility...

Re: Jet JWP-12 thicknesser first impressions

you might want to check this out about jointer set-up...
http://www.youtube.com/profile?user=TheWoodWhisperer#p/u/0/gO746cuRqV4

Re: Jet JWP-12 thicknesser first impressions

cool ill check it out , thanks!

Re: Jet JWP-12 thicknesser first impressions

feeding rough wood into the thicknesser is ok as long as it isn't twisted or cupped, or you should have a flat side to begin with, if you have either imperfection in your material, a bed is important to get that reference side. without the bed, the twist or cupping will resonate only from the bottom table to the cutting edge of your thicknesser and the result will give you a twisted or cupped side as well... there are lots of plans online and free regarding this matter, I want one soon but my limited space stops me from making one.... I would probably make a flip top thicknesser stand instead for mobility...

here is a sample of what you mentioned for the benefit of the rest of the forum members

http://www.getwoodworking.com/news/article.asp?a=776

http://www.woodworkforums.com/f44/thicknesser-sled-17948/

Re: Jet JWP-12 thicknesser first impressions

finally got the time to calibrate the blades.

it comes with an alignment tool that works intuitively.

Here is what i found out with the alignment. The manual is misleading on how to use the tool (the diagram does not show that the blade has to rest or push onto the notch, instead it shows that the blade is underneath the notch) the tool has two sets of notch where the blades will align. You have to loosen the clamping bolts to the point that the blades are being pushed out by the springrear .

Then you just set the alignment tool and while it is set , tighten the bolts. intuitive siya because you dont have to fiddle the position of the blade. The spring constantly has an outward force. This makes sure the the blade rests/pushes the alignment tool evenly

i ran a ply (wala akong solid eh) thats about 10" the thickness on both ends were about 0.4 mm difference. This to me is negligible for the purpose i will use it for and it could also be caused by a slight twist of the ply (my plys are horrible).

sweet machine,... sweeeeeeeeeeeeeeeeeeeeeeeeeeeet

i have no fron snipe only rear. infeed and out feed tables seem a little hard to adjust ( or not sure if it was possible)

Re: Jet JWP-12 thicknesser first impressions

I dont know if its worth doing something like this in the thickness planer

perhaps with the combination of using the bowed stock jig for the thicknesser it would make more sense

Re: Jet JWP-12 thicknesser first impressions

that would work perfect Ben, I use almost the same only more crude... squares the sides...

Re: Jet JWP-12 thicknesser first impressions

i am beginning to see the wisdom in investing on my thicknesser 🙂

So many jigs so little time. hindi ko pa nagagawa yung lazy susan namin BWAHAHAH... making a circle cutting jig on the ts tomorrow.. zzzz

Re: Jet JWP-12 thicknesser first impressions

that is why I git the thicknesser over the jointer... bigger capacity and lots of workaround...