Jointer Bed flattening Adelaide?

[Blazk]

I was wondering if anyone knew of a company or anyone in Adelaide that does surface grinding / could flatted my jet jpt-410hh (not a 310hh) beds. Bed dimensions are 810(l) x 415(w). Over the past couple years they have been getting worse with time due to the casting moving and has now developed a twist and dish (dish was already there) in both infeed and outfeed tables. Where as the thicknesser bed is fine. This has gotten to the point where it is significantly having an affect when jointing boards.

I went down to Apex Engineering and got quoted $1000 for both beds which I cant afford and thought it was a bit over priced.
Any help is welcome. Thanks.

[rrich]

You probably could do it yourself.

A piece of thick 1/4 inch to 3/8 inch glass with Wet or Dry silicone grit and mineral spirits as lubricant it wouldn't take very long. Just make the glass long enough to do both tables at once. Glue the paper to the glass using something like 3M 77.

Most of the work would be done with 120 and then follow with 180, 220 and maybe 320 grits.

It's not much different than feting a plane.

[Blazk]

Not sure I am that skilled to do it. Unfortunately the jet tables have those ridge lines down the table to "stop friction" would that make a difference ?

[China]

This mob could do it Treg Trailers Pty Ltd » Specialising in custom, commercial and domestic trailers. (http://www.tregtrailers.com.au/) they have a very extensive workshop including some of the largest capacity machines in the state as you have already discovered it won't be cheap, that's the trouble with Chinese cast iron

[KBs PensNmore]

Where in Adelaide are you? If you are close to Pooraka, I may have a contact for you. I had mine done by someone locally that reconditions heads, not the human kind but automotive ones, cost was about $100, mine are 4" or 100mm by 500 long.
Kryn

[Blazk]

Where in Adelaide are you? If you are close to Pooraka, I may have a contact for you. I had mine done by someone locally that reconditions heads, not the human kind but automotive ones, cost was about $100, mine are 4" or 100mm by 500 long.
Kryn

Im at Flinders Park but I dont mind driving there as its only 20-30min. They are still in the car (the beds) as they are just too heavy to keep lifting in and out. I heard that motor machine shops "may" be equipped to handle the size, just depends on what the machines can handle bed wise. Would love the contact info though thanks mate.

[KBs PensNmore]

Ring Carl to find out if he can fit it into his machine,
SA Automotive Engineering ServicesUnit 2/ 103 Research Rd, it's actually on Ween Rd Pooraka SA 5095
tel:0882520000
Kryn

[Blazk]

Ring Carl to find out if he can fit it into his machine,
SA Automotive Engineering Services

Unit 2/ 103 Research Rd, it's actually on Ween Rd Pooraka SA 5095
tel:0882520000
Kryn

Thanks Kryn I will give them a call first thing monday.

[rrich]

Not sure I am that skilled to do it. Unfortunately the jet tables have those ridge lines down the table to "stop friction" would that make a difference ?

If a total klutz like me can do it, anybody can do it. The trick is to set both tables at the same level point at the knives. Then even pressure on both ends of the glass.

Just observe the surface as you flatten it. It's rather obvious what is wearing down and when it is worn down across both tables, you're done with that grit. After 120 you're doing mostly polishing.

[clear out]

We are talking about a piece of glass that is at least 7 foot long by 18 inches wide here.:oo:
I personally would like to see how this is done.
Did you have a special rig to hold the glass maybe a sky hook or similar.
Over that length 5/8 inch thick would be minimum, with some sort of backing frame so one could handle it with out being cut to bits. Beveled edges perhaps.
actually just bring your jointer into my dining room and we'll flip it over and do it on the dining table.:2tsup:
H.


You probably could do it yourself.

A piece of thick 1/4 inch to 3/8 inch glass with Wet or Dry silicone grit and mineral spirits as lubricant it wouldn't take very long. Just make the glass long enough to do both tables at once. Glue the paper to the glass using something like 3M 77.

Most of the work would be done with 120 and then follow with 180, 220 and maybe 320 grits.

It's not much different than feting a plane.

[Blazk]

That would be a fairly substantial piece of glass and no doubt costly i would imaging ? Its a bit trickey to get warped / dished beds co planer though. Sanding them evenly would be a challenge and a half.
Haha Clear_out that would be a sight to see.

[rrich]

We are talking about a piece of glass that is at least 7 foot long by 18 inches wide here.:oo:


I've done it on an old Delta jointer, 6 inches wide and 42 inch bed. The glass shop had a scrap that was about 5 inches by 39 inches and was $25. He even took the sharp edges off.

I did use some epoxy to affix a 3 inch strip of 19 MM Baltic birch to the back side of the glass. Made a nice handle. The jointer has since been sold and the glass went with the jointer.

My jointer wasn't that far out and it only took about a dozen passes to get both tables flat. Then I used a piece of glass from a "Scary Sharp" to more or less polish the tables. Then three or four passes with 150, 180 and 220 grit had the tables looking better than new.

I'm unfamiliar with the mentioned Jet model and did not realize that it had a 7 foot set of tables and 18 inches wide. Obviously my method wouldn't work on something that big.