Problem with fuzzies

[martinka]

Anyone any idea why I've got the bad fuzzies? :mrgreen: I have used 3 different new FD-UR #5 blades on the piece in the photo. In fact I can get a much better cut using ordinary reverse blades. Usually the cut is almost as clean on the underside as on the top. Is it possible there some dampness in the 6mm BB ply I am using, maybe caused by the recent foggy mornings? My wood is kept out in an unheated garage.

Oops, I forgot the photo...

 

[Bryan Bennett]

Hi Martin,I'm sorry that I can't help you, Hopefully help may come soon :roll:

Take care

Bryan

 

[Grahamshed]

I cannot help you either Martin but I do know, from the corp, that they don't like it up um.

 

[gilljc]

yeuch! that looks nasty, hope you get better soon :shock:

 

[stevebuk]

are you cutting fast enough and pushing slowly (sucking eggs springs to mind), seems like the blade isn't clearing the kerf, could be a damp problem also..
you could try a bigger blade..

 

[martinka]

are you cutting fast enough and pushing slowly (sucking eggs springs to mind), seems like the blade isn't clearing the kerf, could be a damp problem also..
you could try a bigger blade..

I can only cut at one speed, Steve. I think it must be damp because I didn't have this problem when I bought the BB ply and I am using the same blades. I'll just have to wait for warmer and drier weather. Except when that gets here I'll be out on the bike and the scroll saw will be under the bench.

 

[cowboy682]

try scrap board underneath only a suggestion

 

[Chippygeoff]

Hi Martin. I go along with Steve. It is almost certainly damp which is causing the problem. You could try pushing the wood a little slower but in your shoes I would leave it in the house overnight to dry out and then cut it. I know you are working in the garage and your saw is single speed. I will treat you to a heater for Christmas.

 

[toesy]

Leave an offcut of ply in the house near a rad (not on it) for 30mins then cut and see if it does the same.

 

[martinka]

It's colder in the house than it is outside and there's rising damp on 3 walls. It's probably better left in the garage. :mrgreen:

 

[nadnerb]

Hi Martin
Its damp. There are 4 solutions to that problem.
1 heat the shed (expensive)
2 Move to Spain (have to learn a new language and like running around after bulls)
3 Keep your wood in the house (possible grounds for divorce)
4 Give up woodworking and take up knitting
Every year I have to move into the house and put all my wood under the bed, this leads to two weeks of picture and no sound from my better half, but on the plus side the wood is bone dry!!!
Regards
Brendan

 

[martinka]

Cheers Brendan! Though there's not much point bringing it into the house, there's more damp in here than in the garage. So, knitting it is.

 

[Bryan Bennett]

Brendan you seem to have solved Martin's problem :lol: Do we put our orders in now for knitted jumpers Martin?.It must be living in the Emerald Isle that one can come up with that solution.It has certainly cheered me up for the day,thank you Brendan =D>


Take care

Bryan

 

[bodgerbaz]

Bobble hat please Martin :twisted:

Slate - hmmm, interesting choice of material Martin. What sort of blade would you cut the roof tile thickness with?

 

[martinka]

Bobble hat please Martin :twisted:

Slate - hmmm, interesting choice of material Martin. What sort of blade would you cut the roof tile thickness with?

I only cut an inch to try it, Barry, so I have no idea. At the time I had borrowed an old Draper saw which had pinned blades and it cut it easily.
Coincidentally, I've just dropped a scriber in the corner where the piece of slate is stored along with loads of rubbish, and now I have to clear everything out to get to it. I might give it a try if the slate is still in one piece. And I have just remembered why I never did anything else with it, it left the table looking like someone had been drawing all over it with pencil, so it's definitely not going on my BB ply table.

 

[martinka]

Barry, I just made a couple of cuts to show you. I used an FD-UR #5 blade and it cuts as easy as pine. I wouldn't recommend it though because of the mess.
Oh, and I tried a piece of dry BB ply and there weren't any fuzzies, so it's definitely damp causing the problem.

 

[bodgerbaz]

Hmmm, interesting, thank you. I assume it would be quite brittle and might crumble a bit on tight turns?

Look luck finding the scriber.

Talking of getting side-tracked, I decided to open my thicknesser dust extraction to see if there was anything in there worth emptying. It was so packed solid it was like cutting a fruit cake trying to empty it - included the 'solid' 4" flexible hose. Me thinks I should have emptied it several jobs ago as it was completely suckless :shock:

I'm glad you've banished the fuzzies.