Milling machine & Shaper query

[swood1Participant @swood1]

Hi Peter,

Surely it's not just the depth of cut but also the width of the cut? Or am I missing something? I don't know as obviously I do not have a shaper…..

Steve

[Steve King 5Participant @steveking5]

Just buy one, you'll find some space for it somewhere. I got mine last year after watching abom79, steve summers and lookcreations on you tube. I was saving up for a milling machine at the time but i thought milling machine come up for sale every day but shapers not so much. I was lucky and got one in very good condition with a vice, clamp kit and lots of shaper tooling for £400 if my memory serves my correctly. Its an alba 1a. Iv been using it today cleaning up saw cut cast iron. I was taking 90 thou depth of cut with a step over of 25 thou running at 75 strokes per minute. The machine handled this no problem. I am still going to buy a milling machine when funds alow as im fortunate to have the space. I enjoy using my shaper that much im going to complete harrold hall's book "milling a complete course" using my shaper as im new to machining and i think ill learn loads. Also ending up with some very useful tools in the process. If your in the hull aera come have a go on mine.

Hope this helps

Steve

[Mark RandParticipant @markrand96270]

My 10" Royal shaper served me for best part of 15 years. It was rough when I bought it, did a quick and dirty rebuild when I got it and a proper rebuild last year, then sold it last weekend.

In its time with me, it's acted as a power hacksaw, with a power hacksaw blade in a custom bow saw/frame saw type frame.

It's machined parts to rebuild two lathes and a milling machine including cutting a couple of pinions, one of which was a form that I didn't have a cutter for and the other that the B&S cutter wouldn't fit in the space available on the blank.

It's done much of the work that a milling machine would have done until I got one working and did the work of a bandwas until I got one of those as well.

Now that I have my Beaver milling machine rebuilt and also have a slotting head for it, the shaper has gone on to someone else that can appreciate its relaxing action and the resulting showers of dangerously hot samurai swarf tinkling about the shed and embedding themselves in the walls and myself.

Edited By Mark Rand on 29/01/2020 22:09:20

[Ady1Participant @ady1]

Posted by Mark Rand on 29/01/2020 22:01:58:

the shaper has gone on to someone else that can appreciate its relaxing action and the resulting showers of dangerously hot samurai swarf tinkling about the shed and embedding themselves in the walls and myself.

samurai swarf, I like it

My fleecy with its long random streaks of melted polyester is worn with pride

Had a duelling scar across the back of my right hand for quite a few months too

[IanTParticipant @iant]

Posted by Steven Woodward on 29/01/2020 16:49:49:

Surely it's not just the depth of cut but also the width of the cut? Or am I missing something? I don't know as obviously I do not have a shaper…..

Steve

That's correct Steve – generally when roughing it's better to take a deeper cut with a fine feed (as opposed to a llight cut and a broad feed). This is basically because a thicker chip will not curl as well and requires more power (than a thinner one) and gives greater surface 'tear' that results in a rougher surface – which then takes more effort to clean up.

The shape of the cutting tool is important – a cutting edge angled into the work (with a rounded tip) will work better than an 'upright' cutting edge. The cutting speed has to be right for the material too and that is a function of both motor speed and stroke length (e.g. if you change the stroke length – then the cutting speed changes too).

So deep(er) cuts with fine(r) feeds, a good tool, the right cutting speed are all important things when roughing in the Shaper.

Regards,

IanT

[thaiguzziParticipant @thaiguzzi]

Posted by Peter Simpson 1 on 29/01/2020 13:11:22:

Well just to check I set a 2" square by 6" long piece of BMS up today. Selected the lowest pulley speed. VSD at 50Hz and had a go with a 2mm DOC. As soon as the cutting tool got to its full 2mm cut the machine stalled ? God knows what an 3mm DOC would have achieved. I would be interested to see how your cutting tool was ground. I may not have the correct tool shape. More than willing to have another go with a different cutting tool.

As Ian above concurs, on smaller machines like our Boxford 8"ers, a big DOC recquires a fine feed.

Re tool grinds, i've got most of mine from the best shaper book out there, still available to download and print for free off the net, all 320 odd pages of it, "Suggested Unit Course In Shaper Work" by Delmar Publishers Inc, USA.

Pretty basic shapes, all the common 5-15 degree angles, err on the lesser angles and make sure the tool is honed (or ground on a T&CG) to RAZOR SHARPNESS.

[Peter Simpson 1Participant @petersimpson1]

Well I think an apology is in order. I sharpened a tool and honed it with a diamond block, I also adjusted the feed to as fine as was possible, The machine then cut a 2mm cut using some neat cutting oil. The finish was brilliant. So we can all learn from this excellent forum.

[thaiguzziParticipant @thaiguzzi]

Posted by Peter Simpson 1 on 31/01/2020 07:37:30:

Well I think an apology is in order. I sharpened a tool and honed it with a diamond block, I also adjusted the feed to as fine as was possible, The machine then cut a 2mm cut using some neat cutting oil. The finish was brilliant. So we can all learn from this excellent forum.

No apology needed. We all can learn, inc me. The above book is highly recommended.

Re a nice DOC on a shaper – great fun. Innit.

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