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Re: Spindle Plate Land
Craig C. Hopewell <[email protected]>
John,
I have not heard of this problem before, but I am new to the hobby, and if any lathes had this problem I would have expected it on mine ( 8^) or 8^( - don't know which). I would want this to be accurate, especially if removing and mounting the chuck regularly. If under warranty I would request a new spindle. If not under warranty a new spindle is available from www.littlemachineshop.com for $29.95. Alternatively, an adapter plate similar to those necessary for a four inch chuck could be made. Craig --- In 7x12minilathe@..., "John <moran03@e...>" <moran03@e...> wrote: The raised land on my spindle plate measures 2.154 rather than 2.165chuck measures 2.165.tighten the nuts. |
Spindle Plate Land
John <[email protected]>
The raised land on my spindle plate measures 2.154 rather than 2.165
as given on the mini-lathe site. Sure enough, the recess in the chuck measures 2.165. In order to mount my 3 jaw chuck I first snug the nuts slightly, put a rod in the chuck, and use an indicator on the rod. I rotate the chuck so the high point is up and tap the chuck on the top with a block of wood; this is not a well controlled process so it typically takes several minutes to get TIR between 1 and 2 mils, when I tighten the nuts. Is there a better way to center the chuck? Is the mis-match between the land and the recess common? I expected the chuck to center itself on the spindle land but this mis-match apparently precludes that. John |
Why No New Messages Guys? Is this Group Still Active??
seeker2161 <[email protected]>
Just wondering why nobody ever posts any messages in this group.
Ryan The Sign Guy |
Re: Homier Show - Bessemer, AL - mini mills, mini lathes & Drill Mill
Craig C. Hopewell <[email protected]>
Mike,
Thanks for this information. I called Homier about this drilmill and Shirley, who is alway extremely helpful but relatively unknowledgeable, could not find anyone at the time who was familiar with the drillmill. She did find it on the sale brochure and is sending a brochure. Hopefully Homier will come to Colorado soon. Craig --- In 7x12minilathe@..., "mikenash402 <mnfwd2.minilathe@m...>" <mnfwd2.minilathe@m...> wrote: Some of this message may be off topic since it concerns the newHomier 12 Speed Drill Mill. If so, I'm sorry and I won't do it again. The mini lathe availablity is in the following paragraph. Bessemer, Alabama this morning (2-4-03) and they had 5 of the originial 7x12 mini lathes (one box was open and the way wipers etc., were on it), two mini mills and two $199.99 Drill Mills as of 11AM. The $599 mill drill sold before I got there at 9:45AM. The sale starts at 10 supposedly but folks were already leaving with their arms full when I arrived at 9:45AM. There was only one $199 Drill Mill when I left since I bought one. I already have both their mini mill and mini lathe via mail order. Other than a $100 dust collector and a few piddly odds and ends, the balance of the show was pretty slim. The savings on shipping is huge. (3/4 HP Drilling and Tapping Machine), I'll post what I have measured so far for any who are interested. Freight sells. Except it is a peculiar shade of red-orange. The paint really looks more like some kind of painted on filler glop and is cracked in places. It could really use a nice new overcoat of (fill in your favorite color here) paint. would hit the column if it were installed. -The backlash checked 0.008" on the x axis and 0.011" on the y.showing 1-4 with no zero and ten minor divisions. I measured 4mm travel per turn for each axis. -Motor is 3/4HP UL Listed. I haven't gotten the head out of the boxfar enough to read the motor label yet. But the UL sticker is on the top side and the literature says it is 3/4 HP. -The manual stinks. No specs at all.lathe. I bought it to do a CNC conversion when time permits. I'm intending to try it with the existing lead screw first with perhaps a mod to adjustable nuts to get the backlash down a little first. For $216 out the door it's a much less scary thing to try if I should attempt ball screws later. Plus I'll have the mini mill to work on it with.
|
Homier Show - Bessemer, AL - mini mills, mini lathes & Drill Mill
mikenash402 <[email protected]>
Some of this message may be off topic since it concerns the new Homier 12 Speed Drill Mill. If so, I'm sorry and I won't do it again. The mini lathe availablity is in the following paragraph.
For any who may be interested, I went to the Homier show in Bessemer, Alabama this morning (2-4-03) and they had 5 of the originial 7x12 mini lathes (one box was open and the way wipers etc., were on it), two mini mills and two $199.99 Drill Mills as of 11AM. The $599 mill drill sold before I got there at 9:45AM. The sale starts at 10 supposedly but folks were already leaving with their arms full when I arrived at 9:45AM. There was only one $199 Drill Mill when I left since I bought one. I already have both their mini mill and mini lathe via mail order. Other than a $100 dust collector and a few piddly odds and ends, the balance of the show was pretty slim. The savings on shipping is huge. Since I haven't seen any other descriptions of the Drill Mill #3989 (3/4 HP Drilling and Tapping Machine), I'll post what I have measured so far for any who are interested. This appears to be the same as the 12 speed Drill Mill Harbor Freight sells. Except it is a peculiar shade of red-orange. The paint really looks more like some kind of painted on filler glop and is cracked in places. It could really use a nice new overcoat of (fill in your favorite color here) paint. Particulars: -No vise -MT2 spindle -5/8" drill chuck -Milling Table is 6" x 16 1/2" -Travel is ~ 4 1/4" x 9" (the 4 1/4" is an estimate of where it would hit the column if it were installed. -The backlash checked 0.008" on the x axis and 0.011" on the y. -The handwheels are pitifully marked with stick on paper labels showing 1-4 with no zero and ten minor divisions. I measured 4mm travel per turn for each axis. -Motor is 3/4HP UL Listed. I haven't gotten the head out of the box far enough to read the motor label yet. But the UL sticker is on the top side and the literature says it is 3/4 HP. -The manual stinks. No specs at all. The table movement is far smoother than either the mini mill or mini lathe. I bought it to do a CNC conversion when time permits. I'm intending to try it with the existing lead screw first with perhaps a mod to adjustable nuts to get the backlash down a little first. For $216 out the door it's a much less scary thing to try if I should attempt ball screws later. Plus I'll have the mini mill to work on it with. Mike Nash |
Re: Correcting Height Alignment
Most likely, the work is springing away from the tool
at the center point where there is the greatest amount of flex. This will happen if the work is relatively long (thus limber) compared to the diameter. For example, a piece 8" long and 1/2" dia would have some flex near the center, while a 1" dia. piece of the same length would have much less. Frank Hoose --- Nick DeFeo <ntdefeo@...> wrote:
=== message truncated ===base __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
Re: Correcting Height Alignment
Try making a couple of passes without advancing the tool. It
sounds like the work is deflecting, which a follower rest will take care of. Repeating a finish cut without changing the tool setting will also take care of it. You'll be surprised at how much cutting is done on the 2nd pass! Then again, .002" is my idea of a heavy finishing cut. Roy --- In 7x12minilathe@..., Nick DeFeo <ntdefeo@y...> wrote: several tries but the head and tail stock are now in perfect alignment. Once this was completed, I centered a length of 12L14 between centers and indicated both the top and rear of the stock for alignment. I got readings of less than 1/2 of 0.001" in both planes which I thought were pretty accurate. When I took a light 0.010" cut, both ends of the stock were spot on, but the center was about 0.007" larger. What would cause this slight "bulge" in the center of the stock? I had the live center firm but certainly not forced into the stock to cause a bow in it. As I do not have a follower rest, would that eliminate this minor change in diameter, or is this within reason for the accuracy of these machines? Best regards, Nick <<SNIP>>> |
Re: Correcting Height Alignment
Good Morning, Roy:
I got around to shimming the headstock this weekend past. Took several tries but the head and tail stock are now in perfect alignment. Once this was completed, I centered a length of 12L14 between centers and indicated both the top and rear of the stock for alignment. I got readings of less than 1/2 of 0.001" in both planes which I thought were pretty accurate. When I took a light 0.010" cut, both ends of the stock were spot on, but the center was about 0.007" larger. What would cause this slight "bulge" in the center of the stock? I had the live center firm but certainly not forced into the stock to cause a bow in it. As I do not have a follower rest, would that eliminate this minor change in diameter, or is this within reason for the accuracy of these machines? Best regards, Nick "roylowenthal <roylowenthal@...>" <roylowenthal@...> wrote: Shimming is valid; I suspect they'd replace your lathe with current production, not an exact duplicate of original. Shimming is also much easier to undo than cutting ;-) Roy --- In 7x12minilathe@..., Nick DeFeo <ntdefeo@y...> wrote: times, and wonder if I do exercise the option to return the lathe, if they will give me the "newer" style 7 X 12, or another of the older style, which is what I have. While both have their shortcomings, the older Homier does have some additional features not found on the newer style: oil ports, way wipers and lead screw extension. I will attempt to shim the headstock, as this seems to be far less complicated than cutting the tail stock base, as the tail stock does indicate true in all three planes. Regards, Nick "roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: Mythinking on a flycutter was primarily for surface finish. With either an endmill or a flycutter it's going to require multipleleave a problem personally unsolved. However, the posts pointing outthat this is a vendor QC problem, raise a valid point. As delivered,the lathe was unsatisfactory; the vendor's low budget "fix" has notwrote: tocorrecting the base, due to the limited amount of stock that needs be removed from each surface, especially when quasi machining in awith a different method! Regards, NickA"roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: milling machine is the nicest way, but, a cross-slide millingtheattachment (Varmint Al's) and a fly cutter will work. Once the machined,same errors. Take light cuts until the whole surface is Service.reinstall & re-measure; correct any errors that crept in.
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Re: Correcting Height Alignment
Good Morning, Frank:
I managed to get the headstock shimmed dead center with the tail stock height. I placed a length of 12L14 between centers and indicated along the top and rear of the stock. The indicator moved less than 1/2 of 0.001", which I felt was fairly accurate. I took a light test cut of 0.010" and got a nice, smooth cut with no chatter, which was caused by the height difference originally. Here is my current situation: Both ends of the stock are spot on when miked, but the center of the stock is about 0.007" larger. Any thoughts as to corrective action, or am I looking for too great precision in this machine? Best regards, Nick Frank Hoose <fhoose@...> wrote:Well, you needed an excuse to buy a mill anyway. You won't regret having one. Frank Hoose --- Nick DeFeo <ntdefeo@...> wrote:
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Re: new machines
Well, I guess if you had both models sitting side by
side you could say that the older model is dark blue and the new model is light blue. But without the other one to compare to, you could say the the new one is dark blue. Here are links to the reviews of the new and old style: lathe.com/Mini_lathe/Reviews/Homier_7x12/Homier_7x12_p1.htm Frank Hoose --- In 7x12minilathe@..., "Craig C. Hopewell <chopewel@r...>" <chopewel@r...> wrote: Charlie and Frank,is "dark blue or light blue". Having never seen both colors it istwo colors, I still could not answer for the same reason and the fact<cstarks@c...> wrote:Hi Frank, is the dark blue one the new version? |
Re: new machines
Craig C. Hopewell <[email protected]>
Charlie and Frank,
When speaking to Homier customer service the question always asked is "dark blue or light blue". Having never seen both colors it is difficult to answer. If they are trying to determine whether a machine is old-style or new-style there are better criteria than color, e.g., the set screw dials. If new-style machines came in two colors, I still could not answer for the same reason and the fact that I would call my new-style machine medium blue. In any event, Homier sent the correct chip tray based upon the order date. Frank, Do you have a picture of both colors? Are the colors unique to the style? Craig --- In 7x12minilathe@..., "Charlie Starks" <cstarks@c...> wrote: Hi Frank, is the dark blue one the new version? |
Re: new machines
Hi Frank, is the dark blue one the new version?
toggle quoted message
Show quoted text
Charlie ----- Original Message -----
From: Frank Hoose To: 7x12minilathe@... Sent: Saturday, February 01, 2003 3:40 AM Subject: Re: [7x12minilathe] Re: new machines The quality varies from machine to machine, but from what I have seen and heard, has steadily gotten better over the last few years. The new ones are usually very good right out of the box, although they still require some adjustments and TLC for best performance. The early Homier lathes were from a different manufacturer. The good ones are pretty nice, but I heard that they had a lot of QC problems and I believe that was a factor in why Homier switched to the Sieg brand. Frank Hoose --- "Craig C. Hopewell <chopewel@...>" <chopewel@...> wrote: > I can appreciate your concerns completely and had > for some months > prior to purchasing a Homier 7X12 been paralyzed due > to same. Any of > the 7X1x lathes will be somewhat deficient if real > precision is to be > expected. The choices really come down to $$$; a > Homier at about $360 > delivered, a Lathemaster at over $700 delivered, a > Prazzi at some low > to mid thousands of dollars, or a Myford at over > $7000 in this size > class. > > Craig > > --- In 7x12minilathe@..., "jackasspkd > <leguess1@j...>" > <leguess1@j...> wrote: > > I realize a new lathe needs to be adjusted and > tweaked but yall are > > getting into milling and shimming a new lathe to > get it to line up > > right. Is this typical for these Asian lathes. If > I couldnt get one > > to adjust right I would send it back for another > lathe or for a > > refund. I dont want to have to buy a milling > machine to start taking > > metal off of a brand new lathe. > > > To unsubscribe from this group, send an email to: > 7x12minilathe-unsubscribe@... > > > > Your use of Yahoo! Groups is subject to > > > __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. To unsubscribe from this group, send an email to: 7x12minilathe-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
Re: Correcting Height Alignment
Well, you needed an excuse to buy a mill anyway. You
won't regret having one. Frank Hoose --- Nick DeFeo <ntdefeo@...> wrote:
__________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
Re: new machines
The quality varies from machine to machine, but from
what I have seen and heard, has steadily gotten better over the last few years. The new ones are usually very good right out of the box, although they still require some adjustments and TLC for best performance. The early Homier lathes were from a different manufacturer. The good ones are pretty nice, but I heard that they had a lot of QC problems and I believe that was a factor in why Homier switched to the Sieg brand. Frank Hoose --- "Craig C. Hopewell <chopewel@...>" <chopewel@...> wrote: I can appreciate your concerns completely and had __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
Re: Correcting Height Alignment
Shimming is valid; I suspect they'd replace your lathe with
current production, not an exact duplicate of original. Shimming is also much easier to undo than cutting ;-) Roy --- In 7x12minilathe@..., Nick DeFeo <ntdefeo@y...> wrote: times, and wonder if I do exercise the option to return the lathe, if they will give me the "newer" style 7 X 12, or another of the older style, which is what I have. While both have their shortcomings, the older Homier does have some additional features not found on the newer style: oil ports, way wipers and lead screw extension. I will attempt to shim the headstock, as this seems to be far less complicated than cutting the tail stock base, as the tail stock does indicate true in all three planes. Regards, Nick "roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: Mythinking on a flycutter was primarily for surface finish. With either an endmill or a flycutter it's going to require multipleleave a problem personally unsolved. However, the posts pointing outthat this is a vendor QC problem, raise a valid point. As delivered,the lathe was unsatisfactory; the vendor's low budget "fix" has notwrote: tocorrecting the base, due to the limited amount of stock that needs be removed from each surface, especially when quasi machining in awith a different method! Regards, NickA"roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: milling machine is the nicest way, but, a cross-slide millingtheattachment (Varmint Al's) and a fly cutter will work. Once the machined,same errors. Take light cuts until the whole surface is Service.reinstall & re-measure; correct any errors that crept in.
|
Re: Correcting Height Alignment
Point well taken Roy, although I have contacted Homier several times, and wonder if I do exercise the option to return the lathe, if they will give me the "newer" style 7 X 12, or another of the older style, which is what I have. While both have their shortcomings, the older Homier does have some additional features not found on the newer style: oil ports, way wipers and lead screw extension. I will attempt to shim the headstock, as this seems to be far less complicated than cutting the tail stock base, as the tail stock does indicate true in all three planes. Regards, Nick
"roylowenthal <roylowenthal@...>" <roylowenthal@...> wrote: My thinking on a flycutter was primarily for surface finish. With either an endmill or a flycutter it's going to require multiple passes of light cuts. With no rational reason, I prefer the appearance of the flycut surface; it's strictly aesthetics :-) There is the issue of why not make it Homier's problem? I know some of us (me), suffer from "male answer syndrome" and hate to leave a problem personally unsolved. However, the posts pointing out that this is a vendor QC problem, raise a valid point. As delivered, the lathe was unsatisfactory; the vendor's low budget "fix" has not corrected the problem; time for a refund or replacement machine. Roy --- In 7x12minilathe@..., Nick DeFeo <ntdefeo@y...> wrote: correcting the base, due to the limited amount of stock that needs to be removed from each surface, especially when quasi machining in a horizontal plane. I have had some experience using flycutters years ago (Bridgeport mill), and wonder if the milling attachment can withstand the forces produced by the flycutter. The milling attachment seems to be the most cost effective way to go, requiring just a good angle plate and a suitable vice for the compound assembly. Thanks for the excellent tip on getting this corrected with a different method! Regards, Nick "roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: Amilling machine is the nicest way, but, a cross-slide milling attachment (Varmint Al's) and a fly cutter will work. Once the To unsubscribe from this group, send an email to: 7x12minilathe-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now |
Re: Correcting Height Alignment
My thinking on a flycutter was primarily for surface finish. With
either an endmill or a flycutter it's going to require multiple passes of light cuts. With no rational reason, I prefer the appearance of the flycut surface; it's strictly aesthetics :-) There is the issue of why not make it Homier's problem? I know some of us (me), suffer from "male answer syndrome" and hate to leave a problem personally unsolved. However, the posts pointing out that this is a vendor QC problem, raise a valid point. As delivered, the lathe was unsatisfactory; the vendor's low budget "fix" has not corrected the problem; time for a refund or replacement machine. Roy --- In 7x12minilathe@..., Nick DeFeo <ntdefeo@y...> wrote: correcting the base, due to the limited amount of stock that needs to be removed from each surface, especially when quasi machining in a horizontal plane. I have had some experience using flycutters years ago (Bridgeport mill), and wonder if the milling attachment can withstand the forces produced by the flycutter. The milling attachment seems to be the most cost effective way to go, requiring just a good angle plate and a suitable vice for the compound assembly. Thanks for the excellent tip on getting this corrected with a different method! Regards, Nick "roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: Amilling machine is the nicest way, but, a cross-slide milling attachment (Varmint Al's) and a fly cutter will work. Once the |
Re: Correcting Height Alignment
My thinking on a flycutter was primarily for surface finish. With
either an endmill or a flycutter it's going to require multiple passes of light cuts. With no rational reason, I prefer the appearance of the flycut surface; it's strictly aesthetics :-) There is the issue of why not make it Homier's problem? I know some of us (me), suffer from "male answer syndrome" and hate to leave a problem personally unsolved. However, the posts pointing out that this is a vendor QC problem, raise a valid point. As delivered, the lathe was unsatisfactory; the vendor's low budget "fix" has not corrected the problem; time for a refund or replacement machine. Roy --- In 7x12minilathe@..., Nick DeFeo <ntdefeo@y...> wrote: correcting the base, due to the limited amount of stock that needs to be removed from each surface, especially when quasi machining in a horizontal plane. I have had some experience using flycutters years ago (Bridgeport mill), and wonder if the milling attachment can withstand the forces produced by the flycutter. The milling attachment seems to be the most cost effective way to go, requiring just a good angle plate and a suitable vice for the compound assembly. Thanks for the excellent tip on getting this corrected with a different method! Regards, Nick "roylowenthal <roylowenthal@y...>" <roylowenthal@y...> wrote: Amilling machine is the nicest way, but, a cross-slide milling attachment (Varmint Al's) and a fly cutter will work. Once the |
Re: new machines
Craig C. Hopewell <[email protected]>
I can appreciate your concerns completely and had for some months
prior to purchasing a Homier 7X12 been paralyzed due to same. Any of the 7X1x lathes will be somewhat deficient if real precision is to be expected. The choices really come down to $$$; a Homier at about $360 delivered, a Lathemaster at over $700 delivered, a Prazzi at some low to mid thousands of dollars, or a Myford at over $7000 in this size class. Craig --- In 7x12minilathe@..., "jackasspkd <leguess1@j...>" <leguess1@j...> wrote: I realize a new lathe needs to be adjusted and tweaked but yall are |
Re: new machines
I guess it all comes down to this: If money and space were no object, then a brand new South Bend 10" or one of the other lathes out there would fill the bill. On the other hand, for hobby/limited use, one of the bigger lathes is a considerable investment, not to mention cost of shipping and setting up such a machine. Given the small cost of these asian made lathes, even with their inherent inaccuracies, one would be hard pressed to justify purchasing a larger lathe, unless the intent is a start-up manufacturing shop, or serious production work. Regards, Nick
"jackasspkd <leguess1@...>" <leguess1@...> wrote:I realize a new lathe needs to be adjusted and tweaked but yall are getting into milling and shimming a new lathe to get it to line up right. Is this typical for these Asian lathes. If I couldnt get one to adjust right I would send it back for another lathe or for a refund. I dont want to have to buy a milling machine to start taking metal off of a brand new lathe. To unsubscribe from this group, send an email to: 7x12minilathe-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now |
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