Woodrunners wood processors

Wood Chunkers
#81

Tom, l can confirm your presentation :smile: also, his workshop is also a gym, l have had the honor of testing out his arm wresling training torture devices.

15 Likes
#82

Ran some pallet wood through the chunker.

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It really squeeks when chunking dry wood.

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#83

Greetings Goran , uff, dry wood causes problems, and not only for screw chippers, but also knife chippers have problems with dry wood, especially if the wood is oak, cherry, chestnut, 
 The Remet R120 knife chipper (which is supposed to cut up to 120 mm thick) can cut (with difficulty) hard dry wood up to 30 mm, anything more is impossible to cut, with the R80 screw chipper it is similar. (I mean the thickness of the wooden pieces that are created when trimming boards). With a knife chipper, the problem arises with the cutting angle, when the knives start to cut into the hard surface of the wood, which is too large for thicker wood, so the knives literally only squeeze the wood sideways and the chipper stops instantly. With a screw chipper, there is a lot of friction when the blade cuts into hard wood, but this can be reduced somewhat by “lubricating” it with water.

14 Likes
#84

I mustn’t disappoint Mr. Tom too much, so I lit a blacksmith’s hearth and heated the shaft with the intention of tempering the hardened surface, so that the weld wouldn’t break. I tried to adjust the helices of the blade so that each next one would have a larger gap for the thickness of the blade, so that pieces of wood wouldn’t get stuck between the blade wraps,


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#85

I am just going to go on the record, and say I wish I had one of those today because of our recent storm. :slight_smile:

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#86

Again a precision job Tone! A pain to aline the blades, but not for Dr Tone. And detail with the pitch. My had is off. Top job, again

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#87

What Joep said. Looks perfect.

11 Likes
#88

I’ve done that quality of work but then morning comes and I have to wake up. :sob:

13 Likes
#89

My thought as well when I saw the cutting screw in the picture: very professional.

8 Likes
#90

I’m slowly making progress with making a wood chipper, I roughly “sharpened” the blade with a plasma cutter, the basic housing is roughly done, it will need to be reinforced,

I reduced the first blade wrap, so I can make the inlet opening with a smaller angle relative to the cutting screw, I will also try to achieve bending of the wood with the shape of the filling funnel in a similar sense to that used when chopping bushes, first we bend the wood a little, then we cut it with ease, because the wood opens and does not squeeze the axe,


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#91

Hi Tone, am I seeing this correctly? In your first photo, the driveshaft looks hollow. Is it a thick tube?

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#92

Driveshaft tubes commonly have a wall thickness of 0.083 inches (3/32"). There are thicker ones with .095" and some older vehicles have .065.

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#93

Hi Thierry, the drive axle is made of solid iron (75 mm thick), it is not a tube, I made a seat for an additional bearing in the front, 


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#94

I have an auger built from about 2 3/8 inch pipe and was wondering if it would be possible to press a solid tree inside to reinforce the auger?
The propellers are only 0.25" (6mm) thick, is that enough for a wood chipper?

5 Likes
#95

Hi Thierry, on my screw chipper above i use 6mm flights, it seems to hold up well.
They are made from hardox steel. Same steel as i believe Tone uses, but he uses thicker material, 10mm i think?

7 Likes
#96

Hi Thierry,
Might be possible to fill the tube with something like concrete. It should have very high compressive strength. Weight bars, at the gym, are filled with something that makes them stronger.
Rindert

9 Likes
#97

Concrete is a good option. It has high compressive strength and expands and contracts with temperature at a similar rate to steel. Plus it’s cheap
 at least in that quantity.

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#98

Thank you for your responses.
Is there a recommended helix pitch for this application?
Regarding the suggestion of pouring concrete into the pipe, aren’t you concerned about the concrete cracking and crumbling? :thinking:

6 Likes
#99

Yes, I would be. I haven’t done this before, so I think you need to do your own research.
Rindert

6 Likes
#100

Another video of the chunker, sorry, only in Swedish, but i don’t say anything interesting.

22 Likes