Kapex exploding beading issue

glynster

Member
Joined
May 10, 2015
Messages
9
Recently I have been cutting a lot of moulding/beading (1/2" square roughly) and I can tell you its a white knuckle ride to say the least. In fact I have even resorted to cutting beading by hand lately as I have had beading literally explode on me firing sharp shards of timber across the room. I am aware its probably because I am still using the stock blade. I can just about get a clean cut on mitre-ing beading if I go REEEAAALLLY slow and careful but still one in 10 will shatter.

Anybody else had this experience? The blade is still sharp. Would a very fine blade be a better solution? I am guessing the rake of the teeth is too big that sometimes the beading gets caught in it and shatters rather than being cut.

Cheers - asking because I have a MASSIVE room to wainscot and I have a ton of beading to cut.
 
I use 1/4" tempered fiberboard.  I use spring clamps to hold the 3" vertical pieces and the verticals hold the horizontal piece (just larger than the max cutoff width) down.  I have used 2"x 1/4" wooden door sash for the verticals on the new 18v 7 1/4" Milwaukee sliding chop saw I recently bought.  I just did this Friday and made a zero clearance insert from 1/4" UHMW for the base.
 
glynster said:
Anybody else had this experience?
Yes, I have had this problem in the past. I did blame it on the tool because I am an ignoramus.

glynster said:
Would a very fine blade be a better solution?

No, I don't believe a different blade will solve this problem. I do believe if you lower the blade as shown in this post by [member=1725]jonny round boy[/member] kapex-'depth-of-cut'-adjustment and use a zero clearance insert you will have less problems. I have done this and it seems to have solved the problem. I still cut small pieces with some treapadation but there have not been any significant explosions since.
As to wheather you can just lower the blade so the teeth are adjusted below the insert and not have any exploding pieces or if the combination of a zero insert and lowering the blade was the answer to the problem I was having.
Tim
 
Tim Raleigh said:
No, I don't believe a different blade will solve this problem. I do believe if you lower the blade as shown in this post by [member=1725]jonny round boy[/member] kapex-'depth-of-cut'-adjustment and use a zero clearance insert you will have less problems. I have done this and it seems to have solved the problem. I still cut small pieces with some treapadation but there have not been any significant explosions since.
As to wheather you can just lower the blade so the teeth are adjusted below the insert and not have any exploding pieces or if the combination of a zero insert and lowering the blade was the answer to the problem I was having.
Tim

I just lowered the blade, and that helped immensely. A big thumbs up to JRB for the tip.
 
Cheese said:
Peter's suggesting something like this.

Thanks gents, it never occurred to me that it might be that the work was not properly supported at the blade exit, I can see now that a sacrificial zero clearance fence could be what I am looking for - thanks for the pics that helps.
 
Back
Top