I taught my self Auto cad back in the days when it was on several
floppy disc's . I wasn't a pro but I could do what i wanted with
it .35-40 years down the road & all those CAD brain cells are
in a different location . I tried Freecad but it was a uphill
battle for me . I think once I can get over the wall that I was
hitting I may be able to try it again . The advantage for Freecad
is that it's a open source program , free & will always be .
There are always folks workin on making it better & there is a
pretty good support forum .
?Another free one is Onshape? . Alot of folks that have been in
the cad conversations in some of the groups I'm in seem to use it
& like it . They have a free version for us hobbyist's .
.
animal?
On 12/2/23 4:58 PM, Miket_NYC wrote:
toggle quoted message
Show quoted text
If I remember right, Autocad is one of the pricey
ones. Can anyone recommend a good, free or inexpensive CAD
drawing program?? What drawings I do are still by hand.?
Mike Taglieri?
On Sat, Dec 2, 2023, 2:21 PM
mike allen < animal@...>
wrote:
Thanks
animal
On 12/2/23 11:08 AM, davesmith1800 wrote:
Autocad 2000 on Windows 11 64 bit.
Dave?
|
Re: $1000 Budget: Which 7 x 14 to buy?
I put an electronic drive system on my lead screw but I single point quite a bit. Well I was when I was selling orifices. And they have a metric thread. The ability to change from feeding to threading and back with a few button pushes is well worth the investment to me. A couple days ago I had to make three threaded chair inserts for casters. The chair legs are threaded 9/16 x 16. Yes, 16. Not 12 or 18. I was easily able to turn the material, single point thread the outside, drill and tap thread the inside and part the pieces off. The parts screw into the chair and the casters screw into the part.??Could I have made them with using change gears???Of course but with the electronic system I change in seconds. And it gives the ability to change feed speed on the fly from .001" per revolution to I forget how fast but it's awesome being able to tune the feed to what the material and tool want on the fly. I found 3/4" 12L14 at a .090" depth of cut and 580 rpm cut like butter at .003" feed per rev. ?
Ryan?
On Dec 2, 2023 at 7:46?PM -0500, ChazzC <chaz-creswell@...>, wrote:
Thanks; looks similar to a WARCO drive setup.
|
You might want to consider this one.?
Stan
On 12/2/23 18:58, Miket_NYC wrote:
toggle quoted message
Show quoted text
If I remember right, Autocad is one of the pricey
ones. Can anyone recommend a good, free or inexpensive CAD
drawing program?? What drawings I do are still by hand.?
Mike Taglieri?
On Sat, Dec 2, 2023, 2:21 PM
mike allen < animal@...>
wrote:
Thanks
animal
On 12/2/23 11:08 AM, davesmith1800 wrote:
Autocad 2000 on Windows 11 64 bit.
Dave?
|
Re: belt slip on Mini Lathe Machine with 600W
Tom do ya know what the RPM range is on that motor ? they don't say anything bout RPM unless I was staring right at it . My math puts that motor at 1.33 HP . Seems like a lot for these small lathes . But I also think our buds overseas have a different way of calculating things than we do .
animal
|
If I remember right, Autocad is one of the pricey ones. Can anyone recommend a good, free or inexpensive CAD drawing program?? What drawings I do are still by hand.?
Mike Taglieri?
On Sat, Dec 2, 2023, 2:21 PM mike allen < animal@...> wrote:
Thanks
animal
On 12/2/23 11:08 AM, davesmith1800
wrote:
Autocad 2000 on Windows 11 64 bit.
Dave?
|
Re: $1000 Budget: Which 7 x 14 to buy?
If someone was lookin to get a simple " Backgear " look at the
backgear on a Craftsman 109 lathe .
??? animal
On 12/2/23 3:53 PM, davesmith1800
wrote:
toggle quoted message
Show quoted text
When looking for my mini lathe I did find a few brands with back
gear 7x12 .
But then cost and weight when up.?
If I had problem needing I had room to put a Bridgeport type back
gear.?
I just machined a back plate for my 4 jaw chuck.?
I turn at a higher speed and had only little belt slipping.? After
putting the problem on this group using molasses fixing the
problem and high speed.?
FYI I do think back gears are good thing but weight and cost is
not.
Dave?
|
Re: $1000 Budget: Which 7 x 14 to buy?
Thanks; looks similar to a WARCO drive setup.
|
Re: $1000 Budget: Which 7 x 14 to buy?
Photo?  
|
Re: $1000 Budget: Which 7 x 14 to buy?
Could we get photos of the belt drive and an overall of your lathe? Thanks!
|
Re: belt slip on Mini Lathe Machine with 600W
I add the belt to my cart?
Next order from Amazon I will have one.
It is to make a pulley?
Thank you
Dave?
|
Re: $1000 Budget: Which 7 x 14 to buy?
When looking for my mini lathe I did find a few brands with back gear 7x12 .
But then cost and weight when up.?
If I had problem needing I had room to put a Bridgeport type back gear.?
I just machined a back plate for my 4 jaw chuck.?
I turn at a higher speed and had only little belt slipping.? After putting the problem on this group using molasses fixing the problem and high speed.?
FYI I do think back gears are good thing but weight and cost is not.
Dave?
|
Re: $1000 Budget: Which 7 x 14 to buy?
I have not tried knurling .
Still waiting for a part for tool post.?
I can knurl in mill?
Just chuck the part in drill chuck and knurling tool in vise.?
Dave?
|
Re: $1000 Budget: Which 7 x 14 to buy?
The closest thing I have been able to find to a "back-Gear" (-ish) on a Mini-Lathe (i.e., 7x) is the old style lathes that had a low range and high range by shifting a gear set (the ones that always broke) and the WARCO WM180 (7x12) which has a two-position belt drive. Both of these arrangements would allow for higher torque at lower speeds, but not like a true back-gear as are on larger lathes.
I think some of the confusion comes from not knowing what a back-gear actually is and perhaps also assuming that all "small" lathes are Mini-Lathes - there may be some 8.5x lathes that do actually have a back-gear, but these are theoretically outside the range of discussion for this group.?
|
Re: belt slip on Mini Lathe Machine with 600W
I receently upgraded my 550 watt brushed motor to a 1100 watt BLDC motor.?
??
In the process, I converted to a poly-v belt with 5 grooves.
?
I cut the pulleys based on the technique I saw in a "We Can Do That Better" video, I haven't used it this way for
very long, but I have not noticed any slipping when the motor stalls.
When do you notice the slipping? Is the belt tensioned enough?
What kind of lathe is that? It seems to have a gear train that is different than most of the traditional mini lathes.
I really like that gear banjo. I made one like that for my lathe and really like it.
Tom
??
|
Re: $1000 Budget: Which 7 x 14 to buy?
Pretty much all the folks I talk to knurl in back gear . I
suppose if the lathe goes slow enough & still has the power ,
backgear may not be needed . I always use back gear on my South
Bend when I knurl .
animal
On 12/2/23 8:44 AM, Charles Kinzer
wrote:
toggle quoted message
Show quoted text
Could you provide a link to a
mini-lathe with a back gear?? I have never seen one.? I'm
cuirous.
For most, I don't agree that
a back gear is needed.? The resulting extreme low speed is
especially useful for single point threading, but you don't
really need it and I think a lot of mini-lathe owners rarely,
if ever do single point threading anyway.? It can usually be
done easier with taps and dies if smaller thread sizes
And a quick change gearbox is
not a "must have" or even a "should have" in my view.? A few
probably make something home made, though.? And perhaps more
for the purpose of just doing it as a project because they may
never save the time later that it took to do the project.? And
a large number of Atlas (and Craftsman) lathes were sold
usually with just change gears.? According to Lathes.co.uk
Atlas did come even come out with a quick change gearbox as an
option until 10 years after they came out with a lathe.? I
believe a miniscule number of small hobby lathes have a quick
change gear box or any effort to add one.
Something like the mini lathe
is designed for a price point for the 99% of the market (no
back gear, no quick change gear box, no taper attachment, no
sophisticated collet closer, and so on) rather than the 1%.?
Of course, for real production environments almost always
using larger lathes, such things become a necessity - and
there is certainly an effect on price.
Charles E. "Chuck" Kinzer
On Saturday, December 2, 2023 at 08:16:09 AM PST,
davesmith1800 <davesmith1@...> wrote:
I think biggest two on looking at lathes is quick
change and back gears.
The back gear are found on a few mini lathe at high
cost.
The true quick change is not found.? You have go to a
larger lathe.?
I am put a DC motor on my lead screw .
I have thread dies upto 3/4" diameter so only need to
use change gears on odd threads. The motor is sitting on
my desk?
I look at this problem on the I just purchased in
November 20 2023.?
Dave?
|
|
|
Re: $1000 Budget: Which 7 x 14 to buy?
Ya can also look see if theres a makerspace in the area . Some of
them have monthly classes on machine usage & safety .
animal
On 12/2/23 6:42 AM, ChazzC wrote:
toggle quoted message
Show quoted text
You need to do some research then reach out to someone in your
area, visit their shop and with their help try their lathe. After
you have a better idea of what you need (& want), figure out
where you are going to put it and home much space will be
required. Then find the largest reasonably priced lathe you can
afford that will fit. Yes, you won't have your lathe immediately,
but in the end you will be happier with what you get.
|
Re: $1000 Budget: Which 7 x 14 to buy?
??? ??? Great sayin Bruce . I use my belt sander the most out of
all my abrasive tools in my shop . I have one grinder that has a
white wheel on it that I use for touch ups on bit's & than a
cheap diamond hone from Wallmart for final honing . Odds are real
good that if ya buy a new grinder that unless ya buy a new Baldor
or the like that the wheels will be so far out of wack that they
will either need a ton of work or replacing . White wheels are not
that expensive & they run cooler . There's a lot of youtubes
on tool bit sharpening . The article that Bruce linked is a good
article . Mrpete22 has a couple on youtube that are real good
& there's lots of plane for sharpening jigs online.
HSS tool blanks are pretty cheap , if ya want to practice tool
bit sharpening just get some keystock in the size ya will be using
& practice with that.
animal
On 12/2/23 6:32 AM, Bruce J wrote:
toggle quoted message
Show quoted text
An alternative is a belt sander with an 80 or 60 grit belt, which
works well, AND has other uses in your shop. (I’m a big proponent
of Alton Brown’s dictum “There should be no uni-taskers in your
kitchen (or shop, in this case:-) other than a fire extinguisher"
I get good results even with a cheap HF 1” belt
sander.
He reccomends a 2” one, but he’s also grinding
bigger tools than the ?” ones I use.
I also made a sort of ‘zero clearance’ plate for the
table, which helps considerably.
On Dec 1, 2023, at 10:08 PM, Charles Kinzer
< ckinzer@...>
wrote:
Or some of these things and other things
might be "should haves" in your case.? Or even just
"could haves."? Only you can know.? And since you are
new to this, your probably don't know.? So, it might
be best to wait until you start "making chips" and
then if a need arises, get it then.
In case you didn't notice, I slipped in
"grinder".? Personally, I can't see having a lathe
without having at least something like a six inch
bench grinder for grinding tool bits.
--?
Bruce Johnson
"Wherever you go, there you are." B.
Banzai, PhD
Attachments:
|
Autocad 2000 on Windows 11 64 bit.
Dave?
|
Re: belt slip on Mini Lathe Machine with 600W
Older style timing belts that used trapezoid-shaped teeth, did make noise. ? New (as in the late 20th century) belts use rounded tooth profiles and are a big improvement in terms d noise, wear and timing precision. They are nearly silent in the tiny sizes we are talking about. ?The belt manufacturers all have good technical articles on their websites.
That said v-belts are surprisingly efficient, synchronus belts have only about a 5% advantage.
toggle quoted message
Show quoted text
On Dec 2, 2023, at 6:19?AM, davesmith1800 <davesmith1@...> wrote:
They make mini lathes with either.
The downside to a timing belt is at high speed it is noisy from what read.?
I think a combo would be best but they build only all poly V or timing belt.
I may someday do that combination?
Dave?
|
davesmith1800