Studying ICA Level 2 Carpentry at college and need some help - Woodworking Talk

NJHarrison1979 · 11-11-2008, 08:15 AM

Hi I have afew questions that I would like anybodys help on. This is an assignment I have for college and am not to sure about how I should answer them.

List the and identify the faults and subsequent remidial action required for the following:

1: Saw blade smoking when cross cutting timber for boxing of SVP.

2: Power tools stop and start intermittently.

3: Jagged edge to work top joint.

4:Jig saw blade running off track during use.

5: Evidence of breakout on the work top at the post formed edge.

Any help with these would be of great assistance.

Thanks

NH

firehawkmph · 11-11-2008, 08:32 AM

NH,
I am not sure if we should be doing your homework for you

but I'll try and give you a few ideas on some of the points.
1: Dull blade; wrong blade for intended use; too fast a feed rate.
2:bad switch on power tool; bad extension cord; bad cord on tool
3:not sure what you are talking about here. more info.
4:blade guides not adjusted properly; wrong blade for intended use; too fast a feed rate; operator error.
5:I don't cut any post formed, but anyway. Wrong blade; wrong cutting orientation.
Hope this helps. Notice I didn't put in any remediations, I'll leave that for you to finish.
Good luck,
Mike Hawkins

NJHarrison1979 · 11-11-2008, 08:47 AM

Hi Mike

When you say wrong cutting orientation to question 5 what do you mean?
Thanks for the help so far.

Cheers
NH

firehawkmph · 11-11-2008, 06:55 PM

If you are cutting a piece of wood with a circular saw blade, one face of the wood will have a nicer finish than the other, depending on what part of the blade came through it. For instance, if you are ripping a piece of wood on a table saw, the top edge will be better than the bottom cut edge. Why? On the top edge, the teeth of the blade are pulling through the wood, cutting the top fibers while they are supported by the wood underneath them. Consequently, the bottom edge fibers are being cut without being supported underneath fully, resulting in some tear out. That's why a zero clearance table insert results in a better cut than an insert with a larger opening around the blade. Follow what I am saying? Hope this helps.
Mike Hawkins

bradnailer · 11-12-2008, 09:56 AM

Here's my take...

1. Dull blade or saw kerf pinch.
2. Bad switch or bad cord.
3. Not sure what the question means.
4. To fast speed rate or too limber a blade.
5. Not sure what the question means.