23,108
edits
Pipe Making: Difference between revisions
→Tooling
| Line 183: | Line 183: | ||
#Standard Silver&Deming bits work great too, especially if you're following a previously drilled draught hole. The main drawback is that the end of your tenon will need to be tapered to match the bottom of the mortise. | #Standard Silver&Deming bits work great too, especially if you're following a previously drilled draught hole. The main drawback is that the end of your tenon will need to be tapered to match the bottom of the mortise. | ||
#Forstner bits are an excellent choice. They leave a nice flat hole with clean sides. They're accurate and will not tend to follow grain or a previously drilled hole. | #Forstner bits are an excellent choice. They leave a nice flat hole with clean sides. They're accurate and will not tend to follow grain or a previously drilled hole. | ||
==== Forstner bits ==== | |||
[[Image:forstner.jpg|thumb|Forstner bit]]Forstner bits, named after their inventor, Benjamin Forstner, bore precise, flat-bottomed holes in wood, in any orientation with respect to the wood grain. They can cut on the edge of a block of wood, and can cut overlapping holes.[http://en.wikipedia.org/wiki/Drill_bit#Forstner_bit] In pipe making Forstner bits are often used for facing operations while making shanks and stems, and can also be used for facing the top of the bowl. Many pipe makers also use them for drilling the mortise, providing a smooth flat bottomed hole that facilitates a precise tenon to mortise fit. | |||
You will find cheap sets of Forstner bits abound in discount stores, but these are not accurate enough for shank and stem facing work, where precision ground bits can make all the difference in facilitating a flush fit. Respected brands include Freud, Famag, Fisch (there are many others). The important thing to look for is "precision ground" bits, and avoid the cheap sets. | |||
==== Drills for stems ==== | ==== Drills for stems ==== | ||
| Line 194: | Line 200: | ||
---- | ---- | ||
==== Other helpful bits ==== | ==== Other helpful bits ==== | ||
#Centers of various diameters are very helpful for starting holes accurately in stems and stummels. | #Centers of various diameters are very helpful for starting holes accurately in stems and stummels. | ||