C3 - LT#1 Use a Jointer Flashcards
What is the main purpose of a jointer?
Remove warps, twists from a board - dress it flat and true
Rabbet, taper, bevel and chamfer a stock, does a jointer do this?
YES
What determines the size of the jointer?
The length of the knives
The outfeed table of the jointer must be set to exactly match the height of what?
The knives of cutter head
What is the cause of the problem that is indicated when a snipe or gouge appears at the end of a cut?
Outfeed table is too low in relation to the height of the knives
Lumber that is bowed across its width should be jointed with the cupped side:
Cupped side down
With which part of the jointer must the stock make full contact if you want a straight cut?
Back outfeed table
What adjustment must you make to the jointer fence in order to cut a chamfer?
A tilt
Where should you stand in relation to the machine when jointing a board?
To the side of the machine
Kickbacks are more likely to occur when the jointer is set for?
Larger volume of cut
To ensure that the fence of the jointer is perpendicular to the table surface, periodic checks should be made with:
A combination square or a Tri-square
What are the two purposes of the infeed table? (Jointer)
1) Height of the adjustable infeed table governs the depth of cut
2) support the work as it’s fed into the cutter head
What is the main purpose of the outfeed table ( Jointer)
Governs the straightness of the material passed through
How must you sharpen jointer knives?
Only with a stone, or if carbide- diamond embedded stone
Most common sizes for jointer knives?
150 to 200 mm
What is a guard ( jointer)
Cover parts of jointer knives that are not in use
What is the primary tool for preparing rough stock for cabinet and furniture construction?
Jointer - mainly to make edges JOIN
The outfeed table must be set according to what?
It must be set to the same height as the top of the knives
What is sniping?
Change in thickness caused by having the outfeed table set too low
The depth of cut should be set to what for wide boards? (jointer)
Shallow for wide boards
The depth of cut should be set to what for narrow boards?
Deeper for narrow boards
What is the depth of cut ( jointer )
Combo. of width of the board, depth and the feed rate
Cutting against the grain or with the grain with a jointer?
knives should be cutting WITH the grain
How to feed twisted boards into infeed ( jointer )
Balance the twist, try to keep board the same plane, 2nd pass the board will balance better, stable on 3rd
If you cut the rabbet in one pass, you must:
slow the rate of the feed to reduce the danger of kickback
Why regularly move the location of the fence?
Expose unused portions of the knives, wear on the knives will then be even
