if the linear rail is mounted on the underside of the legacy aluminum rail( and i am assuming the mounting is on the upper rail, not the bottom rail), you would need an "L" shaped piece of metal to connect the "Y" axis carriage to the linear bearing carriages...these "L" pieces would then hit the vertical supports, even if they are thin, flat steel...this only applies to machines that have a vertical support in the center of the machine...i know 1800's have them and possibly 1200's...but any machine that does not have a center support, mounting the linear rail on the bottom of the legacy rail is doable...although, i don't see "dodging the bullet" if the "Y" axis is set up on bearings...i am really hoping the tape measure thing works out, as it will solve this problem...joe
On Sunday, January 11, 2015 at 10:59:48 AM UTC-5, yknotwood wrote: > > Even if you use flat steel and flush mounted bolts? > > > > *From:* legacy-orna...@googlegroups.com <javascript:> [mailto: > legacy-ornamental-mills@googlegroups.com <javascript:>] > *Sent:* Sunday, January 11, 2015 9:36 AM > *To:* legacy-orna...@googlegroups.com <javascript:> > *Subject:* Re: linear bearing mod for a legacy > > > > you still would not be able to connect the "Z" axis carriage to the linear > rail and bearing...the supports would still be an obstacle > > On Sunday, January 11, 2015 at 10:28:19 AM UTC-5, yknotwood wrote: > > Why not move the vertical supports to the outside of the rails, leaving > the underside clear? > > > > *From:* legacy-orna...@googlegroups.com [mailto: > legacy-ornamental-mills@googlegroups.com] > *Sent:* Monday, January 05, 2015 4:37 AM > *To:* legacy-orna...@googlegroups.com > *Subject:* Re: linear bearing mod for a legacy > > > > well, got to the shop this morning and headed for the legacy before taking > off my coat!...LOL!...can't mount the slide on the underside of the "X" > axis rail...the vertical rail supports are in the way...they are every 3 > ft. or so...but this idea would work on the other legacy's, providing there > is no support in the center of the machine...i think the 1000 models are > doable, and the 1200's perhaps...the 1800's are not doable as they have the > vertical support i am referring to...so it's a top mounted linear rail for > my machine and i will just have to deal with the dust...but in my > situations, the dust is very minimal as we use the legacy strictly for > decorative cuts...no turning, planing, etc. operations that would produce > large amounts of sawdust...with an adequate collector set up on the > machine, i am anticipating not having that big a problem with dust getting > into the rails...and as mentioned before, i will just have to diligent in > using a blow gun when operating the machine, as needed...for others using > the full capabilities of the legacy, the problem would most likely be more > of an issue...anyway, the mod continues...progress reports to > follow...thanks for the feedback...joe > > On Saturday, January 3, 2015 1:31:33 PM UTC-5, joe biunno wrote: > > hi mike > > that approach never crossed my mind! (and why this group is so > helpful when doing things like this)...i am not in the shop at this moment, > but i think it could work on the "X" axis...certainly would do an excellent > job of reducing or even eliminating the dust problem...the "Y" axis might > be difficult...setting the rails deeper might reduce the diameter capacity > of the machine...nut sure, but definitely worth looking into...certainly > will look at this first thing monday morning and post some thoughts...many > thanks mike > > On Saturday, January 3, 2015 12:00:00 PM UTC-5, LILtwisted wrote: > > Joe > I am wondering if there is any way you would be able to mount the track > under the rails. This would take care of the sawdust catching problem as > well as allow you to get the carriage lowered to the exact position needed > for optimum use. All that would be necessary would be to mount the rails > from the outer edge. Then a big set of "C" brackets to mount the existing > carriage to. Then connect that assembly to the linear carriage brackets in > the picture. With the proper legs going down the the rollers, you would be > able to get the existing carriage to hunker down a bit closer to the work. > Or shorten the carriage "Y" rails and actually set the carriage deeper > between the rails. Just a thought > > Mike > OK > > On 1/2/2015 5:13 PM, 'joe biunno' via Legacy Ornamental Mills wrote: > > progress report...received a linear carriage recently that is to be used > with the rails i have chosen...did not want to take the plunge of buying a > quantity without being sure that it all would function to my needs, so i > opted for just the one piece...the carriage is made very well, tight > tolerances on the bearings and bolt holes, all bearings easily > adjustable...set up mock-ups of the mounting on the "X" axis and the "Y" > axis...the first photo shows the mounting set up for the "X" axis...this > worked out extremely well using the "T" slot nuts and button head allen > bolts( 1/4"-20), all from mcmaster...the carriage centers perfectly in the > rail...it will add 13/16" in height to the "Z" axis assembly, but i feel > that is minimal and certainly manageable...the second photo shows the > mounting on the "Y" axis...the flat plate is 1/8" X 1 1/2", drilled and > tapped( 1/4"-20) holes that line up to the holes in the linear rails...i > originally thought the rail would "cradle" into the legacy extruded > aluminum railing very easily, but it took a bit of tweaking for it to sit > the way it should...but it did work out and all is tight and > secure...again, the same button heads were used and there is no > interference with the linear slide passing over them. > > > > some other miscellaneous notes: > > > > 1) when i passed the linear carriage through the track that i had welded > together(three, 22" pieces, two welded joints), there was a "bump"...so i > did a bit of filing and the bump was reduced to almost no bump at all...and > certainly not anything that would transfer through three axis' and the > router to then leave a mark on a workpiece...still might consider buying > the lengths i need and thus not have to do any filing, but there is some > finances saved by doing the joints...and i feel if i jig the pieces up > better than i did before, then weld, the filing would be little or perhaps > not even necessary > > > > 2) yes, i did paint the rails, "legacy" red...from > > this moment forward, this set up was a legacy option from back in the > day!...that's my story and i'm sticking to it!...LMAO!!!!! > > > > 3) to the moderators of this page, please take note...i am just kidding in > regards to #2...LOL > > > > well, now i wait for the rest of the carriages that i ordered...in the > meantime i will begin doing the welding...after that it will be just a > bunch of drilling, tapping and some assembly...and two axis' will be > completed...considering doing the "Z" axis...i can see doing some template > following using the "Z": axis, but only if a small, counter weight set up > can be done so the router assembly can "float" above the workpiece, while > the carriage follows a template on the up/down plane, NOT the front/back > plane...there are times we need to do work like this in our shop, but have > found a way to do it on our shaper...but i get very nervous when we do it > because it is a bit precarious...thus the consideration of the floating "Z" > axis and perhaps making that particular operation as safe as possible...and > of course there are still a number of other things/mods i want to do to the > machine in the upcoming year...happy new year to everyone and looking > forward to your comments and critiques...thanks...joe > > > On Tuesday, December 16, 2014 4:58:40 PM UTC-5, joe biunno wrote: > > starting a new topic here to address help in possibly setting up a legacy > with linear bearings... suggestions for possible sources of materials and > anything else that might make this mod as easy and inexpensive as > possible....first photo is of a piece of sample track and a carriage type, > both from PBC LINEAR, sitting on a piece of legacy rail...this is PBC's > "low profile redi rail' line...total height is 3/4"...the rail is 1 7/16" > wide(legacy rail is 1 5/8" wide)...this carriage is 3" wide and might not > work well on the the legacy...but i did get it as a free sample it does > allow me to play with the mounting a bit...difficult to see, but there is a > 't' nut inside the legacy rail that was gotten from mcmaster-carr...it has > a 1/4-20 thread in it and needed very little modification(file the bottom > corners a bit and filed the top down just a hair) to make it fit the legacy > rail...the PBC rail comes pre drilled with holes exactly in the center of > the linear rail, so it is practically self centering onto the legacy > rail(due to the "t" nut)...they also have a set up called "redi-rail slide" > that is a TOTAL of 1 3/8" wide, which is less than the legacy rail...the > height is a bit more than the low profile rail though(15/16" +/-), but > certainly acceptable, i believe...the only problem with these set-ups(and > others from other manufacturers) is the cost...usually rail will cost > around $30 per foot and a single carriage can cost around $70...so an "X" > axis alone would be in the neighborhood of $640(2-6ft pcs. of rail and 4 > carriages)...add in the "Y" axis(do not see a need to do the "Z" axis), and > you could easily be spending $1,000 when shipping and other expenses are > factored in...so a pricey mod for sure...anyone have some definitive, less > expensive sources for rails and carriages?...i do remember reading jon > preston's posts regarding his mod (excellent work!) and his finding > inexpensive bearing hardware on ebay...and i have seen the same or similar > my self, but they all seem to be coming from china...and with all due > respect to burney's mod, this is a bit better due to the fact that you can > adjust the bearings on each carriage for wear(which should be in about ten > to twenty years!...LOL!)...these rails will also add some rigidity to the > legacy rails(if it's even needed at all)...joe > > -- > You received this message because you are subscribed to the Google Groups > "Legacy Ornamental Mills" group. > To unsubscribe 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