Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Drilling cast iron?
I have a table saw with two stamped metal wings.
I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? |
#3
|
|||
|
|||
the post from DanG is correct, but one caution is that thin section castings
sometimes can have chill spots, which are very hard. If you have a hole that is particulary difficult, and the drillbit dulls, chill iron is probably the culprit. If that hole location is a must, you may need to use a carbide bit, slower rpms, and some lubricant. "toller" wrote in message ... I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? |
#4
|
|||
|
|||
toller wrote:
I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? Couple more things from an old machinist. Make sure your drill does not have a flat spot in the webbing. If it does it needs a pilot hole or it will want to wander. With cast iron, even water is a suitable coolant. Frank |
#5
|
|||
|
|||
"bill a" wrote in message . com... "toller" wrote in message ... I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? the post from DanG is correct, but one caution is that thin section castings sometimes can have chill spots, which are very hard. If you have a hole that is particulary difficult, and the drillbit dulls, chill iron is probably the culprit. If that hole location is a must, you may need to use a carbide bit, slower rpms, and some lubricant. Ermm........ Slower rpms is generally not advisable when using carbide tooling........ Not gonna get into the "why" part of the deal here--so you hafta just trust me on it this time is all, but in short, I guess I'll just add.......Ker-blang!!! -- SVL |
#6
|
|||
|
|||
PrecisionMachinisT wrote:
"bill a" wrote in message . com... "toller" wrote in message ... I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? the post from DanG is correct, but one caution is that thin section castings sometimes can have chill spots, which are very hard. If you have a hole that is particulary difficult, and the drillbit dulls, chill iron is probably the culprit. If that hole location is a must, you may need to use a carbide bit, slower rpms, and some lubricant. Ermm........ Slower rpms is generally not advisable when using carbide tooling........ Not gonna get into the "why" part of the deal here--so you hafta just trust me on it this time is all, but in short, I guess I'll just add.......Ker-blang!!! Heh, missed that. Correct. Frank |
#7
|
|||
|
|||
"bill a" wrote in message . com... the post from DanG is correct, but one caution is that thin section castings sometimes can have chill spots, which are very hard. If you have a hole that is particulary difficult, and the drillbit dulls, chill iron is probably the culprit. If that hole location is a must, you may need to use a carbide bit, slower rpms, and some lubricant. A masonry carbide bit, or something special? |
#8
|
|||
|
|||
A traditional type carbide twist drill is hard to find in retail (and
expensive) so I think you could try it with a new masonry point. Cast iron doesn't need much in the way of chip control geometry. Try it first with a regular drill bit, though. The iron might machine like butter "toller" wrote in message ... "bill a" wrote in message . com... the post from DanG is correct, but one caution is that thin section castings sometimes can have chill spots, which are very hard. If you have a hole that is particulary difficult, and the drillbit dulls, chill iron is probably the culprit. If that hole location is a must, you may need to use a carbide bit, slower rpms, and some lubricant. A masonry carbide bit, or something special? |
#9
|
|||
|
|||
bill a wrote:
A traditional type carbide twist drill is hard to find in retail (and expensive) so I think you could try it with a new masonry point. Cast iron doesn't need much in the way of chip control geometry. Try it first with a regular drill bit, though. The iron might machine like butter Most often it will. If a masonry bit is required it could be a disaster without a pilot hole. Masonry bit are usually flat on the tip (in center) so *that* part doesn't really cut and it will often elongate the hole and wander. |
#10
|
|||
|
|||
"toller" wrote:
Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) I had no troubles drilling holes in 50's vintage craftsman table saw, to add a Jet fence. Sharp bit, and center punch should be all you need. |
#11
|
|||
|
|||
On Fri, 19 Nov 2004 22:51:08 GMT, "toller" wrote:
I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? Use a slow speed and make a dimple in the iron before drilling. You could make a ring of clay around the drill area to keep a small pool of oil. It should bore easily. |
#12
|
|||
|
|||
In article , toller wrote:
I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? The type of cast iron used for a saw table is not hard to drill and lubrication is not required either. Just mark your positions with a center punch and take your time. -- Larry Wasserman Baltimore, Maryland |
#13
|
|||
|
|||
|
#14
|
|||
|
|||
PrecisionMachinisT posted for all of us....
"bill a" wrote in message . com... "toller" wrote in message ... I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? the post from DanG is correct, but one caution is that thin section castings sometimes can have chill spots, which are very hard. If you have a hole that is particulary difficult, and the drillbit dulls, chill iron is probably the culprit. If that hole location is a must, you may need to use a carbide bit, slower rpms, and some lubricant. Ermm........ Slower rpms is generally not advisable when using carbide tooling........ Not gonna get into the "why" part of the deal here--so you hafta just trust me on it this time is all, but in short, I guess I'll just add.......Ker-blang!!! I would be interested either here or in email. Thanks! -- Tekkie |
#16
|
|||
|
|||
"Oscar_Lives" wrote in message
news:3zSpd.157991$R05.142074@attbi_s53... "Jim Yanik" . wrote in message .. . (Lawrence Wasserman) wrote in : In article , toller wrote: I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? The type of cast iron used for a saw table is not hard to drill and lubrication is not required either. Just mark your positions with a center punch and take your time. I should think that using lubrication would be better for your drill bits. Unless you only use them once and dispose of them after one use. -- Jim Yanik jyanik-at-kua.net Lubricant/coolant is not needed for cast iron. Correct - it will just create mud. |
#17
|
|||
|
|||
"Clark Griswold" wrote in message news:ft0qd.675839$8_6.85463@attbi_s04... "Oscar_Lives" wrote in message news:3zSpd.157991$R05.142074@attbi_s53... "Jim Yanik" . wrote in message .. . (Lawrence Wasserman) wrote in : In article , toller wrote: I have a table saw with two stamped metal wings. I found a cast iron table from an old saw at a garage sale for $3. Cleaned up it should make a great wing. Unfortunately it only has holes on three sides, and I need them on all four. (Since both it an my saw are craftsman, I am hoping the other holes line up, but better check before I do any new drilling...) Any advice on drilling additional holes? I have an industrial drill and a big pile of drill bits I got when a tool shop went out of business, but it looks pretty thick. I know I have to keep oil on the surface, anything else? The type of cast iron used for a saw table is not hard to drill and lubrication is not required either. Just mark your positions with a center punch and take your time. I should think that using lubrication would be better for your drill bits. Unless you only use them once and dispose of them after one use. -- Jim Yanik jyanik-at-kua.net Lubricant/coolant is not needed for cast iron. Correct - it will just create mud. Thank you for the affirmation. I feel like more of a man now. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Drilling into Cast Iron - 21/64" | Home Repair | |||
drilling cast iron? | UK diy | |||
Wrought Iron, Cast Alum and Cast Iron Decorative welding | Metalworking | |||
Cast Iron sewer -- Is it a hazard? | Home Repair | |||
Cast Iron sewer -- Is it a hazard? | Home Ownership |