HOBBYMAT BFE65 PDF

table and deal with the combined use of BFE 65 and KT x as KBF. Note please that the BFE . as part of the HOBBYMAT system. Fig. 6 shows the. Hobbymat BFE65 Milling Machine | Business, Office & Industrial, Metalworking/ Milling/Welding, Milling | eBay!. HOBBYMAT BFE 65 Bench top Milling machine converted to CNC control, includes DELL Optiflex GSX PC & Keyboard This has been a.

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Counting turns of a handwheel is error-prone, inefficient and… dull. Wanting more spark in my life I decided to add DROs to the mill table. I also installed some way covers at the same time as the scales — to prevent chips from collecting on the ways and also to protect the scales.

I have been using the DRO almost daily for a year and a half, and wonder how I ever managed without them. Capacitive digital scales abandonded.

I originally planned to use cheap er capacitive scales like the ones below, and build an Arduino-based display head. For the gory detail of my attempts to build an Arduino-based reader see this page.

I did have a much more detailed write-up of hoobbymat the capacitive scales, however I had to switch to a DRO kit off eBay so this is a much shorter write-up.

I bought my kit from seller motor-mall. It arrived from China in just a week. The kit contained the multi-function display, and three linear scales. There are many sellers offering the same or similar kits.

The display head comes with a number of functions. I would probably use more but the English in the user manual is indecipherable. I did my best with Mrs Naut as the Goddess but found that she is not adjustable. I paid a little extra and went for the version with 0. I am glad I went for the higher-resolution version, as I hobbtmat now know when the gibs are loose, and get early warning of when things are hobbyat going to plan. The only gripe I have is that the Y-axis in the head stopped working after about a month.

I just disconnected the lead to the linear scale, and plugged it into the X-axis port on the back of the head. I did not follow this up with the seller….

The scales had solid mounting holes, and featured a yellow strip that neatly opened and closed around the link to the reading head. The heads have a mm yobbymat so of play in them perpendicular to travel, which made installing them easy. I decided to place the X-axis scales behind the table, out of the way of the gib adjusting screws and X-axis stops.

I installed the scale upside down — with the reading head at the bottom. The long part of the scale was bolted to the T-slot table, using a couple of spacers to match the distance of the reading head from the lower part of the table. While I was at it I also installed way covers, made out of the plastic concertina part of an expanding file.

I also added a piece of thin aluminium angle to shroud the scale from the top. I took the top two parts of the table off and laid them upside-down on a sheet of plate glass, and then aligned and punched holes in both parts of the table to mount the scales.

Behind the reading head and also the long part of the scale are spacers which give the necessary offset to each part of the scale. X-axis scales installed, and after a year or so of use. You can see the thin aluminium shroud at the top, and the spacers pulling the scale out from the T-slot table. The plastic way covers work remarkably well, although after extensive use they could probably do with replacement… You can also see the Y-axis scale below. I made up a two-part bracket: This two-part design made it easy to align everything and mark out the screw holes.

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As I installed the scale right-way-up with the reading head at the topI felt I needed more protection for the scales than the yellow plastic strip that opens and closes around the head as it travels up and down the scale. I ended up milling a slot into a piece of aluminium angle, and using furry draught excluding strips which fill the slot when it is not occupied by the bracket connected to the reading head. This furry stuff is great — I can see lots of uses for it.

I got mine from The Hairy Worma family business who manufacture the stuff. Top view showing the two-part bracket, the aluminium top cover with its milled slot. The bits of fur poking through the slot are the draught excluder. The arrangement works very well — only a few bits of swarf have gotten through the fur and they were easily dealt with by the yellow plastic strips on the scales. Bottom view showing bracket connection to the reading head.

The fur came with a self-adhesive strip: I stuck one side hobbymatt the aluminium cover seen in previous picand the other to the adjustable stub of aluminium angle that you can see in the photo above. The front way covers: I used aluminium strips screwed to the center section of the table on the right in the picwith the other side screwed to the top of the leadscrew mounting block.

The dial is now difficult but not impossible to read, however I have not found this to be an issue, as I now have DROs! I have used this set-up for a year and a half, including some very messy jobs… Apart from the problem with the Y-axis on the display packing hobbykat, the Gobbymat have proved more useful and robust than I could ever have hoped. However the KT mill table was in need of some TLC… it was covered in muck and sometime in the past someone had broken both of the handwheels probably when trying to move it.

I had already disassembled the table during the lathe rebuildfor ease of storage and also to clean the worst of the muck off most of the bits. Hobbymar first job was to find replacements for the handwheels.

This proved to be more difficult than I expected. The stock handwheels were mm diameter, had a 10mm bore with a 3mm keyway, and a 30mm diameter by 12mm deep boss. One of the original handwheels — twiddle me not. The boss part is broken off, visible at the top. First I went to the usual suspects: Next I trawled eBay, the best I could find were from this seller in China, and had a 10mm bore but a 4mm keyway.

I ordered them and they arrived about a week later dunno how they are managing this but delivery times from China are now one to two weeks, pretty impressive. I chucked up the handwheel and set to work machining a new boss. The handwheels are made out of Bakelite, or something very similar.

Hobbymat BFE65 Milling machine opinions? | MIG Welding Forum

hobbmat Top tips for machining Bakelite:. Machining Bakelite is a bastard. Makes a hell of a mess, and blunts tools on sight. Light cuts just cause the Bakelite to melt and harden, and blunt the tool even faster. Heavy cuts get under this layer and remove a lot of material. I would get one good pass with a heavy cut, then remove the tool for sharpening…. After an hour of machining, and many long hours regrinding tools… The Boss arrived.

Before and after pics, the second handwheel is ready to be chucked up and frustrate me. Handwheel installed, showing the index ring.

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hobbymat bfe65 – picture 1

Next I cleaned up all the bits with petrol and a green scourer for non-way surfacescleaned the holes with a pipe cleaner and blew them out with compressed air. It was all going so well until I turned over the t-slot table and found surface rust underneath.

I scraped as much off as I could, very carefully and gently, with a blade. After some inspection and head scratching I realised that the surface rust was not on the ways, but instead on the other surface the not-way.

After scraping the surface felt very smooth, no pitting at all and the machining marks were still clearly visible. In the end I rubbed it down gently with some oil and fine emery paper, and left it at that. While not ideal, I think that even if this rust had been on the ways it would not have caused too many problems. I am not expecting supreme accuracy from a mini-mill.

Before above and after below pics.

Hobbymat BFE65 Milling Machine | eBay

Even hobbbymat these photos you can still see the machining marks. They were both at left end of the table furthest from the handwheelso I guess they got damaged because they were exposed, hanging out over the edge of the base. This damage may have happened at the same time the handwheels were broken.

I got out my blade and emery paper again, and gently sanded away the raised parts. I tested that it was flat by running the blade over the dent — when the blade passed over without catching anything then I stopped sanding. Ground stock would be better if you have some. The dent is visible just above the emery paper. The rest of the build went smoothly, there are not many parts and even without a diagram it is easy to work out where everything goes.

I lathered the ways with way oil, then cleaned up the mess I had made… the leadscrews I lubricated with the same way oil. The only thing that still stumps me is the length of the gib screws: Also it would make more sense to have slotted or square ends rather than a hex bolt head, as it is difficult to get a spanner over the gib screws on the lower plate.

March Counting turns of a handwheel is error-prone, inefficient and… dull. Capacitive digital scales abandonded I originally planned to use cheap er capacitive scales like the ones below, and build an Arduino-based display head.

DRO kit off eBay I bought my kit from seller motor-mall. The head came with a variety of bracketry which made mounting it a doddle. I did not follow this up with the seller… The scales had solid mounting holes, and featured a yellow strip that neatly opened and closed around the link to the reading head.

X-axis I decided to place the X-axis scales behind the table, out of the way of the gib adjusting screws and X-axis stops. DROs in use I have used this set-up for a year and a half, including some very messy jobs… Apart from the problem with the Y-axis on the display packing up, the DROs have proved more useful and robust than I could ever have hoped. Handwheels The first job was to find replacements for the handwheels. Top tips for machining Bakelite: Cleaning and mending Next I cleaned up all the bits with petrol and a green scourer for non-way surfacescleaned the holes with a pipe cleaner and blew them out with compressed air.